使用#pragma阻止一些warnings
这篇博客的内容都是记的网上的。是流水账。只是记录下来以便日后之有，避免每次重新google。
#pragma除了可以用来把不同功能的代码进行分隔组织外还可以用来disable一些warnings。这在引入一些第三方带有warnings的库的时候很有用。
#pragma用处：http://nshipster.com/pragma/
#Clang Diagnostics: http://nshipster.com/clang-diagnostics/
Clang warning strings和flag的对应表：http://fuckingclangwarnings.com/
为防止以后这个fuckingclangwarnings不能再打开记之如下：
Semantic Warnings
| Warning | Message |
|---|---|
| -WCFString-literal | input conversion stopped due to an input byte that does not belong to the input codeset UTF-8 |
| -WNSObject-attribute | __attribute ((NSObject)) may be put on a typedef only, attribute is ignored |
| -Wabstract-vbase-init | initializer for virtual base class %0 of abstract class %1 will never be used |
| -Waddress-of-array-temporary | pointer is initialized by a temporary array, which will be destroyed at the end of the full-expression |
| -Warc-maybe-repeated-use-of-weak | "weak %select{variable|property|implicit property|instance variable}0 %1 may be accessed multiple times in this %select{function|method|block|lambda}2 and may be unpredictably set to nil assign to a strong variable to keep the object alive |
| -Warc-non-pod-memaccess | %select{destination for|source of}0 this %1 call is a pointer to ownership-qualified type %2 |
| -Warc-performSelector-leaks | performSelector may cause a leak because its selector is unknown |
| -Warc-repeated-use-of-weak | "weak %select{variable|property|implicit property|instance variable}0 %1 is accessed multiple times in this %select{function|method|block|lambda}2 but may be unpredictably set to nil assign to a strong variable to keep the object alive |
| -Warc-retain-cycles | capturing %0 strongly in this block is likely to lead to a retain cycle |
| -Warc-unsafe-retained-assign | assigning retained object to unsafe property object will be released after assignment |
| -Warc-unsafe-retained-assign | assigning %select{array literal|dictionary literal|numeric literal|boxed expression|should not happen|block literal}0 to a weak %select{property|variable}1 object will be released after assignment |
| -Warc-unsafe-retained-assign | assigning retained object to %select{weak|unsafe_unretained}0 %select{property|variable}1 object will be released after assignment |
| -Warray-bounds | array index %0 is past the end of the array (which contains %1 element%s2) |
| -Warray-bounds | array index %0 is before the beginning of the array |
| -Warray-bounds | 'static' has no effect on zero-length arrays |
| -Warray-bounds | array argument is too small contains %0 elements, callee requires at least %1 |
| -Warray-bounds-pointer-arithmetic | the pointer incremented by %0 refers past the end of the array (that contains %1 element%s2) |
| -Warray-bounds-pointer-arithmetic | the pointer decremented by %0 refers before the beginning of the array |
| -Wassign-enum | integer constant not in range of enumerated type %0 |
| -Watomic-property-with-user-defined-accessor | writable atomic property %0 cannot pair a synthesized %select{getter|setter}1 with a user defined %select{getter|setter}2 |
| -Wattributes | unknown attribute %0 ignored |
| -Wauto-var-id | 'auto' deduced as 'id' in declaration of %0 |
| -Wavailability | unknown platform %0 in availability macro |
| -Wavailability | overriding method %select{introduced after|deprecated before|obsoleted before}0 overridden method on %1 (%2 vs. %3) |
| -Wavailability | availability does not match previous declaration |
| -Wavailability | overriding method cannot be unavailable on %0 when its overridden method is available |
| -Wavailability | feature cannot be %select{introduced|deprecated|obsoleted}0 in %1 version %2 before it was %select{introduced|deprecated|obsoleted}3 in version %4 attribute ignored |
| -Wbad-function-cast | cast from function call of type %0 to non-matching type %1 |
| -Wbitfield-constant-conversion | implicit truncation from %2 to bitfield changes value from %0 to %1 |
| -Wbitwise-op-parentheses | '&' within '|' |
| -Wbool-conversion | "initialization of pointer of type %0 to null from a constant boolean " "expression |
| -Wbridge-cast | %0 cannot bridge to %1 |
| -Wbridge-cast | %0 bridges to %1, not %2 |
| -Wbuiltin-requires-header | declaration of built-in function '%0' requires inclusion of the header stdio.h |
| -Wbuiltin-requires-header | declaration of built-in function '%0' requires inclusion of the header setjmp.h |
| -Wbuiltin-requires-header | declaration of built-in function '%0' requires inclusion of the header ucontext.h |
| -Wc++-compat | %select{|empty }0%select{struct|union}1 has size 0 in C, %select{size 1|non-zero size}2 in C++ |
| -Wc++11-compat | explicit instantiation cannot be 'inline' |
| -Wc++11-compat | explicit instantiation of %0 must occur at global scope |
| -Wc++11-compat | explicit instantiation of %0 not in a namespace enclosing %1 |
| -Wc++11-compat | explicit instantiation of %q0 must occur in namespace %1 |
| -Wc++11-narrowing | constant expression evaluates to %0 which cannot be narrowed to type %1 in C++11 |
| -Wc++11-narrowing | type %0 cannot be narrowed to %1 in initializer list in C++11 |
| -Wc++11-narrowing | non-constant-expression cannot be narrowed from type %0 to %1 in initializer list in C++11 |
| -Wc++98-c++11-compat | type definition in a constexpr %select{function|constructor}0 is incompatible with C++ standards before C++1y |
| -Wc++98-c++11-compat | use of this statement in a constexpr %select{function|constructor}0 is incompatible with C++ standards before C++1y |
| -Wc++98-c++11-compat | init-captures.def warn_cxx11_compat_init_capture : Warning "initialized lambda captures are incompatible with C++ standards " "before C++1y |
| -Wc++98-c++11-compat | variable declaration in a constexpr %select{function|constructor}0 is incompatible with C++ standards before C++1y |
| -Wc++98-c++11-compat | constexpr function with no return statements is incompatible with C++ standards before C++1y |
| -Wc++98-c++11-compat | multiple return statements in constexpr function is incompatible with C++ standards before C++1y |
| -Wc++98-c++11-compat | variable templates are incompatible with C++ standards before C++1y |
| -Wc++98-compat | substitution failure due to access control is incompatible with C++98 |
| -Wc++98-compat | %select{anonymous struct|union}0 member %1 with a non-trivial %select{constructor|copy constructor|move constructor|copy assignment operator|move assignment operator|destructor}2 is incompatible with C++98 |
| -Wc++98-compat | enumeration type in nested name specifier is incompatible with C++98 |
| -Wc++98-compat | static data member %0 in union is incompatible with C++98 |
| -Wc++98-compat | default template arguments for a function template are incompatible with C++98 |
| -Wc++98-compat | scalar initialized from empty initializer list is incompatible with C++98 |
| -Wc++98-compat | befriending %1 without '%select{struct|interface|union|class|enum}0' keyword is incompatible with C++98 |
| -Wc++98-compat | use of null pointer as non-type template argument is incompatible with C++98 |
| -Wc++98-compat | friend declaration naming a member of the declaring class is incompatible with C++98 |
| -Wc++98-compat | non-class friend type %0 is incompatible with C++98 |
| -Wc++98-compat | befriending enumeration type %0 is incompatible with C++98 |
| -Wc++98-compat | use of non-static data member %0 in an unevaluated context is incompatible with C++98 |
| -Wc++98-compat | friend function %0 would be implicitly redefined in C++98 |
| -Wc++98-compat | %select{class template|class template partial|variable template|variable template partial|function template|member function|static data member|member class|member enumeration}0 specialization of %1 outside namespace %2 is incompatible with C++98 |
| -Wc++98-compat | reference initialized from initializer list is incompatible with C++98 |
| -Wc++98-compat | redundant parentheses surrounding address non-type template argument are incompatible with C++98 |
| -Wc++98-compat | initialization of initializer_list object is incompatible with C++98 |
| -Wc++98-compat | use of 'template' keyword outside of a template is incompatible with C++98 |
| -Wc++98-compat | non-type template argument referring to %select{function|object}0 %1 with internal linkage is incompatible with C++98 |
| -Wc++98-compat | use of 'typename' outside of a template is incompatible with C++98 |
| -Wc++98-compat | passing object of trivial but non-POD type %0 through variadic %select{function|block|method|constructor}1 is incompatible with C++98 |
| -Wc++98-compat | goto would jump into protected scope in C++98 |
| -Wc++98-compat | constructor call from initializer list is incompatible with C++98 |
| -Wc++98-compat | 'auto' type specifier is incompatible with C++98 |
| -Wc++98-compat | delegating constructors are incompatible with C++98 |
| -Wc++98-compat | 'constexpr' specifier is incompatible with C++98 |
| -Wc++98-compat | inheriting constructors are incompatible with C++98 |
| -Wc++98-compat | explicit conversion functions are incompatible with C++98 |
| -Wc++98-compat | switch case would be in a protected scope in C++98 |
| -Wc++98-compat | '%0' type specifier is incompatible with C++98 |
| -Wc++98-compat | indirect goto might cross protected scopes in C++98 |
| -Wc++98-compat-pedantic | cast between pointer-to-function and pointer-to-object is incompatible with C++98 |
| -Wc++98-compat-pedantic | implicit conversion from array size expression of type %0 to %select{integral|enumeration}1 type %2 is incompatible with C++98 |
| -Wcast-align | cast from %0 to %1 increases required alignment from %2 to %3 |
| -Wcast-of-sel-type | cast of type %0 to %1 is deprecated use sel_getName instead |
| -Wchar-subscripts | array subscript is of type 'char' |
| -Wconditional-uninitialized | variable %0 may be uninitialized when %select{used here|captured by block}1 |
| -Wconstant-logical-operand | use of logical '%0' with constant operand |
| -Wconstexpr-not-const | 'constexpr' non-static member function will not be implicitly 'const' in C++1y add 'const' to avoid a change in behavior |
| -Wconsumed | state of variable '%0' must match at the entry and exit of loop |
| -Wconsumed | parameter '%0' not in expected state when the function returns: expected '%1', observed '%2' |
| -Wconsumed | argument not in expected state expected '%0', observed '%1' |
| -Wconsumed | invalid invocation of method '%0' on a temporary object while it is in the '%1' state |
| -Wconsumed | return state set for an unconsumable type '%0' |
| -Wconsumed | consumed analysis attribute is attached to member of class '%0' which isn't marked as consumable |
| -Wconsumed | invalid invocation of method '%0' on object '%1' while it is in the '%2' state |
| -Wconsumed | return value not in expected state expected '%0', observed '%1' |
| -Wconversion | implicit conversion discards imaginary component: %0 to %1 |
| -Wconversion | non-type template argument with value '%0' converted to '%1' for unsigned template parameter of type %2 |
| -Wconversion | implicit conversion loses floating-point precision: %0 to %1 |
| -Wconversion | implicit conversion loses integer precision: %0 to %1 |
| -Wconversion | non-type template argument value '%0' truncated to '%1' for template parameter of type %2 |
| -Wconversion | implicit conversion turns vector to scalar: %0 to %1 |
| -Wconversion | implicit conversion turns floating-point number into integer: %0 to %1 |
| -Wcovered-switch-default | default label in switch which covers all enumeration values |
| -Wcustom-atomic-properties | atomic by default property %0 has a user defined %select{getter|setter}1 (property should be marked 'atomic' if this is intended) |
| -Wdangling-field | initializing pointer member %0 with the stack address of parameter %1 |
| -Wdangling-field | binding reference %select{|subobject of }1member %0 to a temporary value |
| -Wdangling-field | binding reference member %0 to stack allocated parameter %1 |
| -Wdangling-initializer-list | array backing the initializer list will be destroyed at the end of %select{the full-expression|the constructor}0 |
| -Wdelete-incomplete | deleting pointer to incomplete type %0 may cause undefined behavior |
| -Wdelete-non-virtual-dtor | delete called on %0 that is abstract but has non-virtual destructor |
| -Wdelete-non-virtual-dtor | delete called on %0 that has virtual functions but non-virtual destructor |
| -Wdeprecated | access declarations are deprecated use using declarations instead |
| -Wdeprecated | definition of implicit copy %select{constructor|assignment operator}1 for %0 is deprecated because it has a user-declared %select{copy %select{assignment operator|constructor}1|destructor}2 |
| -Wdeprecated | dynamic exception specifications are deprecated |
| -Wdeprecated-increment-bool | incrementing expression of type bool is deprecated |
| -Wdeprecated-objc-isa-usage | assignment to Objective-C's isa is deprecated in favor of object_setClass() |
| -Wdeprecated-objc-isa-usage | direct access to Objective-C's isa is deprecated in favor of object_getClass() |
| -Wdeprecated-objc-pointer-introspection | bitmasking for introspection of Objective-C object pointers is strongly discouraged |
| -Wdeprecated-objc-pointer-introspection-performSelector | warn_objc_pointer_masking.Text |
| -Wdeprecated-writable-strings | dummy warning to enable -fconst-strings |
| -Wdirect-ivar-access | instance variable %0 is being directly accessed |
| -Wdistributed-object-modifiers | conflicting distributed object modifiers on return type in implementation of %0 |
| -Wdistributed-object-modifiers | conflicting distributed object modifiers on parameter type in implementation of %0 |
| -Wdivision-by-zero | division by zero is undefined |
| -Wdivision-by-zero | remainder by zero is undefined |
| -Wdocumentation | parameter '%0' not found in the function declaration |
| -Wdocumentation | not a Doxygen trailing comment |
| -Wduplicate-enum | element %0 has been implicitly assigned %1 which another element has been assigned |
| -Wduplicate-method-match | multiple declarations of method %0 found and ignored |
| -Wdynamic-class-memaccess | %select{destination for|source of|first operand of|second operand of}0 this %1 call is a pointer to dynamic class %2 vtable pointer will be %select{overwritten|copied|moved|compared}3 |
| -Wempty-body | switch statement has empty body |
| -Wempty-body | for loop has empty body |
| -Wempty-body | if statement has empty body |
| -Wempty-body | range-based for loop has empty body |
| -Wempty-body | while loop has empty body |
| -Wenum-compare | comparison of two values with different enumeration types%diff{ ($ and $)|}0,1 |
| -Wenum-conversion | implicit conversion from enumeration type %0 to different enumeration type %1 |
| -Wexit-time-destructors | declaration requires an exit-time destructor |
| -Wexplicit-ownership-type | method parameter of type %0 with no explicit ownership |
| -Wextern-c-compat | %select{|empty }0%select{struct|union}1 has size 0 in C, %select{size 1|non-zero size}2 in C++ |
| -Wextern-initializer | 'extern' variable has an initializer |
| -Wfloat-equal | comparing floating point with == or != is unsafe |
| -Wformat | "data argument position '%0' exceeds the number of data arguments (%1) |
| -Wformat | position arguments in format strings start counting at 1 (not 0) |
| -Wformat | invalid position specified for %select{field width|field precision}0 |
| -Wformat | cannot mix positional and non-positional arguments in format string |
| -Wformat | values of type '%0' should not be used as format arguments add an explicit cast to %1 instead |
| -Wformat | format specifies type %0 but the argument has type %1 |
| -Wformat | zero field width in scanf format string is unused |
| -Wformat | no closing ']' for '%%[' in scanf format string |
| -Wformat | format string should not be a wide string |
| -Wformat | format string contains '\\0' within the string body |
| -Wformat | '%select{*|.*}0' specified field %select{width|precision}0 is missing a matching 'int' argument |
| -Wformat | field %select{width|precision}0 should have type %1, but argument has type %2 |
| -Wformat | %select{field width|precision}0 used with '%1' conversion specifier, resulting in undefined behavior |
| -Wformat | format string missing |
| -Wformat | incomplete format specifier |
| -Wformat | flag '%0' results in undefined behavior with '%1' conversion specifier |
| -Wformat | flag '%0' is ignored when flag '%1' is present |
| -Wformat | more '%%' conversions than data arguments |
| -Wformat | length modifier '%0' results in undefined behavior or no effect with '%1' conversion specifier |
| -Wformat-extra-args | data argument not used by format string |
| -Wformat-invalid-specifier | invalid conversion specifier '%0' |
| -Wformat-nonliteral | format string is not a string literal |
| -Wformat-security | format string is not a string literal (potentially insecure) |
| -Wformat-zero-length | format string is empty |
| -Wgcc-compat | GCC does not allow the 'cleanup' attribute argument to be anything other than a simple identifier |
| -Wglobal-constructors | declaration requires a global constructor |
| -Wglobal-constructors | declaration requires a global destructor |
| -Wgnu-conditional-omitted-operand | use of GNU ?: conditional expression extension, omitting middle operand |
| -Wheader-hygiene | using namespace directive in global context in header |
| -Widiomatic-parentheses | using the result of an assignment as a condition without parentheses |
| -Wignored-attributes | 'malloc' attribute only applies to functions returning a pointer type |
| -Wignored-attributes | %0 attribute only applies to %select{functions|unions|variables and functions|functions and methods|parameters|functions, methods and blocks|functions, methods, and classes|functions, methods, and parameters|classes|variables|methods|variables, functions and labels|fields and global variables|structs|variables, functions and tag types|thread-local variables|variables and fields|variables, data members and tag types|types and namespaces|Objective-C interfaces}1 |
| -Wignored-attributes | '%0' attribute cannot be specified on a definition |
| -Wignored-attributes | __weak attribute cannot be specified on an automatic variable when ARC is not enabled |
| -Wignored-attributes | Objective-C GC does not allow weak variables on the stack |
| -Wignored-attributes | __weak attribute cannot be specified on a field declaration |
| -Wignored-attributes | attribute %0 cannot be applied to %select{functions|Objective-C method}1 without return value |
| -Wignored-attributes | attribute declaration must precede definition |
| -Wignored-attributes | attribute %0 is ignored, place it after \"%select{class|struct|union|interface|enum}1\" to apply attribute to type declaration |
| -Wignored-attributes | __declspec attribute %0 is not supported |
| -Wignored-attributes | attribute %0 ignored, because it cannot be applied to a type |
| -Wignored-attributes | attribute %0 after definition is ignored |
| -Wignored-attributes | %0 attribute ignored |
| -Wignored-attributes | 'sentinel' attribute only supported for variadic %select{functions|blocks}0 |
| -Wignored-attributes | 'sentinel' attribute requires named arguments |
| -Wignored-attributes | '%0' only applies to %select{function|pointer|Objective-C object or block pointer}1 types type here is %2 |
| -Wignored-attributes | 'nonnull' attribute applied to function with no pointer arguments |
| -Wignored-attributes | %0 attribute can only be applied to instance variables or properties |
| -Wignored-attributes | ibaction attribute can only be applied to Objective-C instance methods |
| -Wignored-attributes | %0 calling convention ignored on variadic function |
| -Wignored-attributes | %0 only applies to variables with static storage duration and functions |
| -Wignored-attributes | %0 attribute argument not supported: %1 |
| -Wignored-attributes | #pramga ms_struct can not be used with dynamic classes or structures |
| -Wignored-attributes | transparent union definition must contain at least one field transparent_union attribute ignored |
| -Wignored-attributes | first field of a transparent union cannot have %select{floating point|vector}0 type %1 transparent_union attribute ignored |
| -Wignored-attributes | 'gnu_inline' attribute requires function to be marked 'inline', attribute ignored |
| -Wignored-attributes | calling convention %0 ignored for this target |
| -Wignored-attributes | transparent_union attribute can only be applied to a union definition attribute ignored |
| -Wignored-attributes | %select{alignment|size}0 of field %1 (%2 bits) does not match the %select{alignment|size}0 of the first field in transparent union transparent_union attribute ignored |
| -Wignored-attributes | attribute %0 is already applied |
| -Wignored-attributes | %0 attribute ignored for field of type %1 |
| -Wignored-attributes | %0 attribute ignored when parsing type |
| -Wignored-attributes | %0 attribute only applies to %select{functions|methods|properties}1 that return %select{an Objective-C object|a pointer|a non-retainable pointer}2 |
| -Wignored-attributes | %0 attribute only applies to %select{Objective-C object|pointer}1 parameters |
| -Wignored-attributes | attribute %0 is already applied with different parameters |
| -Wignored-attributes | unknown visibility %0 |
| -Wignored-qualifiers | "'%0' type qualifier%s1 on return type %plural{1:has|:have}1 no effect |
| -Wignored-qualifiers | ARC %select{unused|__unsafe_unretained|__strong|__weak|__autoreleasing}0 lifetime qualifier on return type is ignored |
| -Wimplicit-atomic-properties | property is assumed atomic by default |
| -Wimplicit-atomic-properties | property is assumed atomic when auto-synthesizing the property |
| -Wimplicit-fallthrough | fallthrough annotation in unreachable code |
| -Wimplicit-fallthrough | unannotated fall-through between switch labels |
| -Wimplicit-fallthrough | fallthrough annotation does not directly precede switch label |
| -Wimplicit-function-declaration | implicit declaration of function %0 |
| -Wimplicit-function-declaration | use of unknown builtin %0 |
| -Wimplicit-retain-self | "block implicitly retains 'self' explicitly mention 'self' to indicate this is intended behavior |
| -Wincompatible-library-redeclaration | incompatible redeclaration of library function %0 |
| -Wincomplete-implementation | method definition for %0 not found |
| -Winherited-variadic-ctor | inheriting constructor does not inherit ellipsis |
| -Winitializer-overrides | subobject initialization overrides initialization of other fields within its enclosing subobject |
| -Winitializer-overrides | initializer overrides prior initialization of this subobject |
| -Wint-to-pointer-cast | cast to %1 from smaller integer type %0 |
| -Wint-to-void-pointer-cast | cast to %1 from smaller integer type %0 |
| -Winvalid-iboutlet | IBOutletCollection properties should be copy/strong and not assign |
| -Winvalid-iboutlet | %select{instance variable|property}2 with %0 attribute must be an object type (invalid %1) |
| -Winvalid-noreturn | function %0 declared 'noreturn' should not return |
| -Winvalid-noreturn | function declared 'noreturn' should not return |
| -Wlarge-by-value-copy | return value of %0 is a large (%1 bytes) pass-by-value object pass it by reference instead ? |
| -Wlarge-by-value-copy | %0 is a large (%1 bytes) pass-by-value argument pass it by reference instead ? |
| -Wliteral-conversion | implicit conversion from %0 to %1 changes value from %2 to %3 |
| -Wliteral-range | magnitude of floating-point constant too large for type %0 maximum is %1 |
| -Wliteral-range | magnitude of floating-point constant too small for type %0 minimum is %1 |
| -Wlogical-not-parentheses | logical not is only applied to the left hand side of this comparison |
| -Wlogical-op-parentheses | '&&' within '||' |
| -Wloop-analysis | variable%select{s| %1|s %1 and %2|s %1, %2, and %3|s %1, %2, %3, and %4}0 used in loop condition not modified in loop body |
| -Wloop-analysis | variable %0 is %select{decremented|incremented}1 both in the loop header and in the loop body |
| -Wmethod-signatures | conflicting parameter types in implementation of %0: %1 vs %2 |
| -Wmethod-signatures | conflicting return type in implementation of %0: %1 vs %2 |
| -Wmicrosoft | extra qualification on member %0 |
| -Wmismatched-method-attributes | attributes on method implementation and its declaration must match |
| -Wmismatched-parameter-types | conflicting parameter types in implementation of %0%diff{: $ vs $|}1,2 |
| -Wmismatched-return-types | conflicting return type in implementation of %0%diff{: $ vs $|}1,2 |
| -Wmissing-braces | suggest braces around initialization of subobject |
| -Wmissing-declarations | '%0' ignored on this declaration |
| -Wmissing-field-initializers | missing field '%0' initializer |
| -Wmissing-method-return-type | method has no return type specified defaults to 'id' |
| -Wmissing-noreturn | %select{function|method}0 %1 could be declared with attribute 'noreturn' |
| -Wmissing-noreturn | block could be declared with attribute 'noreturn' |
| -Wmissing-prototypes | no previous prototype for function %0 |
| -Wmissing-variable-declarations | no previous extern declaration for non-static variable %0 |
| -Wmultiple-move-vbase | defaulted move assignment operator of %0 will move assign virtual base class %1 multiple times |
| -Wnested-anon-types | anonymous types declared in an anonymous union/struct are an extension |
| -Wno-typedef-redefinition | Redefinition of typedef '%0' is a C11 feature |
| -Wnon-literal-null-conversion | "expression which evaluates to zero treated as a null pointer constant of " "type %0 |
| -Wnon-pod-varargs | second argument to 'va_arg' is of ARC ownership-qualified type %0 |
| -Wnon-pod-varargs | cannot pass %select{non-POD|non-trivial}0 object of type %1 to variadic %select{function|block|method|constructor}2 expected type from format string was %3 |
| -Wnon-pod-varargs | second argument to 'va_arg' is of non-POD type %0 |
| -Wnon-pod-varargs | cannot pass object of %select{non-POD|non-trivial}0 type %1 through variadic %select{function|block|method|constructor}2 call will abort at runtime |
| -Wnon-virtual-dtor | %0 has virtual functions but non-virtual destructor |
| -Wnonnull | null passed to a callee which requires a non-null argument |
| -Wnull-arithmetic | use of NULL in arithmetic operation |
| -Wnull-arithmetic | comparison between NULL and non-pointer %select{(%1 and NULL)|(NULL and %1)}0 |
| -Wnull-dereference | indirection of non-volatile null pointer will be deleted, not trap |
| -Wobjc-autosynthesis-property-ivar-name-match | autosynthesized property %0 will use %select{|synthesized}1 instance variable %2, not existing instance variable %3 |
| -Wobjc-forward-class-redefinition | redefinition of forward class %0 of a typedef name of an object type is ignored |
| -Wobjc-interface-ivars | declaration of instance variables in the interface is deprecated |
| -Wobjc-literal-compare | direct comparison of %select{an array literal|a dictionary literal|a numeric literal|a boxed expression|}0 has undefined behavior |
| -Wobjc-literal-missing-atsign | string literal must be prefixed by '@' |
| -Wobjc-method-access | instance method %objcinstance0 not found (return type defaults to 'id') did you mean %objcinstance2? |
| -Wobjc-method-access | class method %objcclass0 not found (return type defaults to 'id') did you mean %objcclass2? |
| -Wobjc-method-access | instance method %objcinstance0 not found (return type defaults to 'id') |
| -Wobjc-method-access | instance method %0 is being used on 'Class' which is not in the root class |
| -Wobjc-method-access | class method %objcclass0 not found (return type defaults to 'id') |
| -Wobjc-method-access | instance method %0 found instead of class method %1 |
| -Wobjc-missing-property-synthesis | "auto property synthesis is synthesizing property not explicitly synthesized |
| -Wobjc-missing-super-calls | method possibly missing a [super %0] call |
| -Wobjc-noncopy-retain-block-property | "retain'ed block property does not copy the block " "- use copy attribute instead |
| -Wobjc-nonunified-exceptions | can not catch an exception thrown with @throw in C++ in the non-unified exception model |
| -Wobjc-property-implementation | property %0 requires method %1 to be defined - use @dynamic or provide a method implementation in this category |
| -Wobjc-property-implementation | property %0 requires method %1 to be defined - use @synthesize, @dynamic or provide a method implementation in this class implementation |
| -Wobjc-property-implicit-mismatch | "primary property declaration is implicitly strong while redeclaration in class extension is weak |
| -Wobjc-property-matches-cocoa-ownership-rule | property's synthesized getter follows Cocoa naming convention for returning 'owned' objects |
| -Wobjc-property-no-attribute | no 'assign', 'retain', or 'copy' attribute is specified - 'assign' is assumed |
| -Wobjc-property-no-attribute | default property attribute 'assign' not appropriate for non-GC object |
| -Wobjc-property-synthesis | auto property synthesis will not synthesize property '%0' because it is 'readwrite' but it will be synthesized 'readonly' via another property |
| -Wobjc-property-synthesis | "auto property synthesis will not synthesize property '%0' because it cannot share an ivar with another synthesized property |
| -Wobjc-protocol-method-implementation | category is implementing a method which will also be implemented by its primary class |
| -Wobjc-protocol-property-synthesis | auto property synthesis will not synthesize property declared in a protocol |
| -Wobjc-redundant-literal-use | using %0 with a literal is redundant |
| -Wobjc-root-class | class %0 defined without specifying a base class |
| -Wobjc-string-compare | direct comparison of a string literal has undefined behavior |
| -Wobjc-string-concatenation | concatenated NSString literal for an NSArray expression - possibly missing a comma |
| -Wover-aligned | type %0 requires %1 bytes of alignment and the default allocator only guarantees %2 bytes |
| -Woverloaded-shift-op-parentheses | overloaded operator %select{|}0 has lower precedence than comparison operator |
| -Woverloaded-virtual | %q0 hides overloaded virtual %select{function|functions}1 |
| -Woverriding-method-mismatch | conflicting distributed object modifiers on parameter type in declaration of %0 |
| -Woverriding-method-mismatch | conflicting parameter types in declaration of %0: %1 vs %2 |
| -Woverriding-method-mismatch | conflicting variadic declaration of method and its implementation |
| -Woverriding-method-mismatch | conflicting distributed object modifiers on return type in declaration of %0 |
| -Woverriding-method-mismatch | conflicting parameter types in declaration of %0%diff{: $ vs $|}1,2 |
| -Woverriding-method-mismatch | conflicting return type in declaration of %0%diff{: $ vs $|}1,2 |
| -Woverriding-method-mismatch | conflicting return type in declaration of %0: %1 vs %2 |
| -Wpacked | packed attribute is unnecessary for %0 |
| -Wpadded | padding %select{struct|interface|class}0 %1 with %2 %select{byte|bit}3%select{|s}4 to align anonymous bit-field |
| -Wpadded | padding %select{struct|interface|class}0 %1 with %2 %select{byte|bit}3%select{|s}4 to align %5 |
| -Wpadded | padding size of %0 with %1 %select{byte|bit}2%select{|s}3 to alignment boundary |
| -Wparentheses | using the result of an assignment as a condition without parentheses |
| -Wparentheses | %0 has lower precedence than %1 %1 will be evaluated first |
| -Wparentheses | operator '?:' has lower precedence than '%0' '%0' will be evaluated first |
| -Wparentheses-equality | equality comparison with extraneous parentheses |
| -Wpointer-arith | subtraction of pointers to type %0 of zero size has undefined behavior |
| -Wpredefined-identifier-outside-function | predefined identifier is only valid inside function |
| -Wprivate-extern | use of __private_extern__ on a declaration may not produce external symbol private to the linkage unit and is deprecated |
| -Wprotocol | method %0 in protocol not implemented |
| -Wprotocol-property-synthesis-ambiguity | property of type %0 was selected for synthesis |
| -Wreadonly-iboutlet-property | readonly IBOutlet property '%0' when auto-synthesized may not work correctly with 'nib' loader |
| -Wreadonly-setter-attrs | property attributes '%0' and '%1' are mutually exclusive |
| -Wreceiver-expr | receiver type %0 is not 'id' or interface pointer, consider casting it to 'id' |
| -Wreceiver-forward-class | receiver type %0 for instance message is a forward declaration |
| -Wreceiver-is-weak | "weak %select{receiver|property|implicit property}0 may be unpredictably set to nil |
| -Wreinterpret-base-class | 'reinterpret_cast' %select{from|to}3 class %0 %select{to|from}3 its %select{virtual base|base at non-zero offset}2 %1 behaves differently from 'static_cast' |
| -Wreorder | %select{field|base class}0 %1 will be initialized after %select{field|base}2 %3 |
| -Wrequires-super-attribute | %0 attribute cannot be applied to %select{methods in protocols|dealloc}1 |
| -Wreturn-stack-address | returning address of local temporary object |
| -Wreturn-stack-address | returning address of label, which is local |
| -Wreturn-stack-address | address of stack memory associated with local variable %0 returned |
| -Wreturn-stack-address | reference to stack memory associated with local variable %0 returned |
| -Wreturn-stack-address | returning reference to local temporary object |
| -Wreturn-type | control may reach end of non-void function |
| -Wreturn-type | non-void %select{function|method}1 %0 should return a value, DefaultError |
| -Wreturn-type | control reaches end of non-void function |
| -Wreturn-type-c-linkage | %0 has C-linkage specified, but returns incomplete type %1 which could be incompatible with C |
| -Wreturn-type-c-linkage | %0 has C-linkage specified, but returns user-defined type %1 which is incompatible with C |
| -Wsection | section does not match previous declaration |
| -Wselector | creating selector for nonexistent method %0 |
| -Wselector-type-mismatch | multiple selectors named %0 found |
| -Wself-assign | explicitly assigning a variable of type %0 to itself |
| -Wself-assign-field | assigning %select{field|instance variable}0 to itself |
| -Wsentinel | "missing sentinel in %select{function call|method dispatch|block call}0 |
| -Wsentinel | not enough variable arguments in %0 declaration to fit a sentinel |
| -Wshadow | declaration shadows a %select{" "local variable|" "variable in %2|" "static data member of %2|" "field of %2}1 |
| -Wshadow-ivar | local declaration of %0 hides instance variable |
| -Wshift-count-negative | shift count is negative |
| -Wshift-count-overflow | shift count = width of type |
| -Wshift-op-parentheses | operator '%0' has lower precedence than '%1' '%1' will be evaluated first |
| -Wshift-overflow | signed shift result (%0) requires %1 bits to represent, but %2 only has %3 bits |
| -Wshift-sign-overflow | signed shift result (%0) sets the sign bit of the shift expression's type (%1) and becomes negative |
| -Wshorten-64-to-32 | implicit conversion loses integer precision: %0 to %1 |
| -Wsign-compare | comparison of integers of different signs: %0 and %1 |
| -Wsign-conversion | implicit conversion changes signedness: %0 to %1 |
| -Wsign-conversion | operand of ? changes signedness: %0 to %1 |
| -Wsizeof-array-argument | sizeof on array function parameter will return size of %0 instead of %1 |
| -Wsizeof-array-decay | sizeof on pointer operation will return size of %0 instead of %1 |
| -Wsizeof-pointer-memaccess | '%0' call operates on objects of type %1 while the size is based on a " "different type %2 |
| -Wsizeof-pointer-memaccess | argument to 'sizeof' in %0 call is the same pointer type %1 as the %select{destination|source}2 expected %3 or an explicit length |
| -Wsometimes-uninitialized | variable %0 is %select{used|captured}1 uninitialized whenever %select{'%3' condition is %select{true|false}4|'%3' loop %select{is entered|exits because its condition is false}4|'%3' loop %select{condition is true|exits because its condition is false}4|switch %3 is taken|its declaration is reached|%3 is called}2 |
| -Wstatic-local-in-inline | non-constant static local variable in inline function may be different in different files |
| -Wstatic-self-init | static variable %0 is suspiciously used within its own initialization |
| -Wstrict-selector-match | multiple methods named %0 found |
| -Wstring-compare | result of comparison against %select{a string literal|@encode}0 is unspecified (use strncmp instead) |
| -Wstring-conversion | implicit conversion turns string literal into bool: %0 to %1 |
| -Wstring-plus-char | adding %0 to a string pointer does not append to the string |
| -Wstring-plus-int | adding %0 to a string does not append to the string |
| -Wstrlcpy-strlcat-size | size argument in %0 call appears to be size of the source expected the size of the destination |
| -Wstrncat-size | the value of the size argument in 'strncat' is too large, might lead to a " "buffer overflow |
| -Wstrncat-size | size argument in 'strncat' call appears " "to be size of the source |
| -Wstrncat-size | the value of the size argument to 'strncat' is wrong |
| -Wsuper-class-method-mismatch | method parameter type %diff{$ does not match super class method parameter type $|does not match super class method parameter type}0,1 |
| -Wswitch | overflow converting case value to switch condition type (%0 to %1) |
| -Wswitch | case value not in enumerated type %0 |
| -Wswitch | %0 enumeration values not handled in switch: %1, %2, %3... |
| -Wswitch | enumeration values %0 and %1 not handled in switch |
| -Wswitch | enumeration value %0 not handled in switch |
| -Wswitch | enumeration values %0, %1, and %2 not handled in switch |
| -Wswitch-enum | enumeration values %0, %1, and %2 not explicitly handled in switch |
| -Wswitch-enum | enumeration values %0 and %1 not explicitly handled in switch |
| -Wswitch-enum | %0 enumeration values not explicitly handled in switch: %1, %2, %3... |
| -Wswitch-enum | enumeration value %0 not explicitly handled in switch |
| -Wtautological-compare | comparison of %0 unsigned%select{| enum}2 expression is always %1 |
| -Wtautological-compare | %select{self-|array }0comparison always evaluates to %select{false|true|a constant}1 |
| -Wtautological-compare | comparison of unsigned%select{| enum}2 expression %0 is always %1 |
| -Wtautological-constant-out-of-range-compare | comparison of constant %0 with expression of type %1 is always %select{false|true}2 |
| -Wthread-safety-analysis | locking '%0' that is already locked |
| -Wthread-safety-analysis | cannot call function '%0' while mutex '%1' is locked |
| -Wthread-safety-analysis | %select{reading|writing}2 the value pointed to by '%0' requires locking %select{'%1'|'%1' exclusively}2 |
| -Wthread-safety-analysis | unlocking '%0' that was not locked |
| -Wthread-safety-analysis | mutex '%0' is locked exclusively and shared in the same scope |
| -Wthread-safety-analysis | calling function '%0' requires %select{shared|exclusive}2 lock on '%1' |
| -Wthread-safety-analysis | %select{reading|writing}2 variable '%0' requires locking %select{'%1'|'%1' exclusively}2 |
| -Wthread-safety-analysis | cannot resolve lock expression |
| -Wthread-safety-analysis | expecting mutex '%0' to be locked at the end of function |
| -Wthread-safety-analysis | mutex '%0' is not locked on every path through here |
| -Wthread-safety-analysis | %select{reading|writing}1 the value pointed to by '%0' requires locking %select{any mutex|any mutex exclusively}1 |
| -Wthread-safety-analysis | %select{reading|writing}1 variable '%0' requires locking %select{any mutex|any mutex exclusively}1 |
| -Wthread-safety-analysis | mutex '%0' is still locked at the end of function |
| -Wthread-safety-analysis | expecting mutex '%0' to be locked at start of each loop |
| -Wthread-safety-attributes | ignoring %0 attribute because its argument is invalid |
| -Wthread-safety-attributes | %0 attribute only applies to %select{fields and global variables|functions and methods|classes and structs}1 |
| -Wthread-safety-attributes | %0 attribute requires arguments that are class type or point to class type type here is '%1' |
| -Wthread-safety-attributes | %0 attribute can only be applied in a context annotated with 'lockable' attribute |
| -Wthread-safety-attributes | %0 attribute requires arguments whose type is annotated with 'lockable' attribute type here is '%1' |
| -Wthread-safety-attributes | '%0' only applies to pointer types type here is %1 |
| -Wthread-safety-beta | Thread safety beta warning. |
| -Wthread-safety-precise | %select{reading|writing}2 the value pointed to by '%0' requires locking %select{'%1'|'%1' exclusively}2 |
| -Wthread-safety-precise | %select{reading|writing}2 variable '%0' requires locking %select{'%1'|'%1' exclusively}2 |
| -Wthread-safety-precise | calling function '%0' requires %select{shared|exclusive}2 lock on '%1' |
| -Wtype-safety | this type tag was not designed to be used with this function |
| -Wtype-safety | specified %0 type tag requires a null pointer |
| -Wtype-safety | argument type %0 doesn't match specified '%1' type tag %select{that requires %3|}2 |
| -Wundeclared-selector | undeclared selector %0 did you mean %1? |
| -Wundeclared-selector | undeclared selector %0 |
| -Wundefined-inline | inline function %q0 is not defined |
| -Wundefined-internal | %select{function|variable}0 %q1 has internal linkage but is not defined |
| -Wundefined-reinterpret-cast | dereference of type %1 that was reinterpret_cast from type %0 has undefined behavior |
| -Wundefined-reinterpret-cast | reinterpret_cast from %0 to %1 has undefined behavior |
| -Wuninitialized | reference %0 is not yet bound to a value when used within its own initialization |
| -Wuninitialized | field %0 is uninitialized when used here |
| -Wuninitialized | block pointer variable %0 is uninitialized when captured by block |
| -Wuninitialized | variable %0 is uninitialized when used within its own initialization |
| -Wuninitialized | variable %0 is uninitialized when %select{used here|captured by block}1 |
| -Wuninitialized | reference %0 is not yet bound to a value when used here |
| -Wunneeded-internal-declaration | %select{function|variable}0 %1 is not needed and will not be emitted |
| -Wunneeded-internal-declaration | 'static' function %0 declared in header file should be declared 'static inline' |
| -Wunneeded-member-function | member function %0 is not needed and will not be emitted |
| -Wunreachable-code | will never be executed |
| -Wunsequenced | multiple unsequenced modifications to %0 |
| -Wunsequenced | unsequenced modification and access to %0 |
| -Wunsupported-friend | dependent nested name specifier '%0' for friend template declaration is not supported ignoring this friend declaration |
| -Wunsupported-friend | dependent nested name specifier '%0' for friend class declaration is not supported turning off access control for %1 |
| -Wunsupported-visibility | target does not support 'protected' visibility using 'default' |
| -Wunused-comparison | %select{equality|inequality}0 comparison result unused |
| -Wunused-const-variable | unused variable %0 |
| -Wunused-exception-parameter | unused exception parameter %0 |
| -Wunused-function | unused function %0 |
| -Wunused-label | unused label %0 |
| -Wunused-member-function | unused member function %0 |
| -Wunused-parameter | unused parameter %0 |
| -Wunused-private-field | private field %0 is not used |
| -Wunused-property-ivar | ivar %0 which backs the property is not referenced in this property's accessor |
| -Wunused-result | ignoring return value of function declared with warn_unused_result attribute |
| -Wunused-value | ignoring return value of function declared with %0 attribute |
| -Wunused-value | expression result unused should this cast be to 'void'? |
| -Wunused-value | expression result unused |
| -Wunused-variable | unused variable %0 |
| -Wunused-volatile-lvalue | expression result unused assign into a variable to force a volatile load |
| -Wused-but-marked-unused | %0 was marked unused but was used |
| -Wuser-defined-literals | user-defined literal suffixes not starting with '_' are reserved%select{ no literal will invoke this operator|}0 |
| -Wvarargs | second parameter of 'va_start' not last named argument |
| -Wvarargs | 'va_start' has undefined behavior with reference types |
| -Wvarargs | second argument to 'va_arg' is of promotable type %0 this va_arg has undefined behavior because arguments will be promoted to %1 |
| -Wvector-conversion | incompatible vector types %select{%diff{assigning to $ from $|assigning to different types}0,1|%diff{passing $ to parameter of type $|passing to parameter of different type}0,1|%diff{returning $ from a function with result type $|returning from function with different return type}0,1|%diff{converting $ to type $|converting between types}0,1|%diff{initializing $ with an expression of type $|initializing with expression of different type}0,1|%diff{sending $ to parameter of type $|sending to parameter of different type}0,1|%diff{casting $ to type $|casting between types}0,1}2 |
| -Wvexing-parse | parentheses were disambiguated as a function declaration |
| -Wvexing-parse | empty parentheses interpreted as a function declaration |
| -Wvisibility | declaration of %0 will not be visible outside of this function |
| -Wvisibility | redefinition of %0 will not be visible outside of this function |
| -Wvla | variable length array used |
| -Wvla-extension | variable length arrays are a C99 feature |
| -Wweak-template-vtables | explicit template instantiation %0 will emit a vtable in every translation unit |
| -Wweak-vtables | %0 has no out-of-line virtual method definitions; its vtable will be emitted in every translation unit |
Lexer Warnings
| Warning | Message |
|---|---|
| -W#pragma-messages | %0 |
| -W#warnings | %0 |
| -W#warnings | %0 |
| -Wambiguous-macro | ambiguous expansion of macro %0 |
| -Wauto-import | treating #%select{include|import|include_next|__include_macros}0 as an import of module '%1' |
| -Wbackslash-newline-escape | backslash and newline separated by space |
| -Wc++11-compat | identifier after literal will be treated as a user-defined literal suffix in C++11 |
| -Wc++11-compat | '%0' is a keyword in C++11 |
| -Wc++98-c++11-compat | digit separators are incompatible with C++ standards before C++1y |
| -Wc++98-c++11-compat-pedantic | binary integer literals are incompatible with C++ standards before C++1y |
| -Wc++98-compat | raw string literals are incompatible with C++98 |
| -Wc++98-compat | unicode literals are incompatible with C++98 |
| -Wc++98-compat | universal character name referring to a control character is incompatible with C++98 |
| -Wc++98-compat | '::' is treated as digraph ':' (aka '[') followed by ':' in C++98 |
| -Wc++98-compat | using this character in an identifier is incompatible with C++98 |
| -Wc++98-compat | specifying character '%0' with a universal character name is incompatible with C++98 |
| -Wc++98-compat-pedantic | variadic macros are incompatible with C++98 |
| -Wc++98-compat-pedantic | #line number greater than 32767 is incompatible with C++98 |
| -Wc++98-compat-pedantic | C++98 requires newline at end of file |
| -Wc++98-compat-pedantic | empty macro arguments are incompatible with C++98 |
| -Wc99-compat | unicode literals are incompatible with C99 |
| -Wc99-compat | %select{using this character in an identifier|starting an identifier with this character}0 is incompatible with C99 |
| -Wcomment | '/*' within block comment |
| -Wcomment | escaped newline between */ characters at block comment end |
| -Wdisabled-macro-expansion | disabled expansion of recursive macro |
| -Wheader-guard | %0 is used as a header guard here, followed by #define of a different macro |
| -Wignored-attributes | unknown attribute '%0' |
| -Wincomplete-module | header '%0' is included in module '%1' but not listed in module map |
| -Wincomplete-umbrella | umbrella header for module '%0' does not include header '%1' |
| -Winvalid-token-paste | pasting formed '%0', an invalid preprocessing token, DefaultError |
| -Wmalformed-warning-check | __has_warning expected option name (e.g. \"-Wundef\") |
| -Wnewline-eof | no newline at end of file |
| -Wnull-character | null character ignored |
| -Wnull-character | null character(s) preserved in string literal |
| -Wnull-character | null character(s) preserved in character literal |
| -Wtrigraphs | ignored trigraph would end block comment |
| -Wtrigraphs | trigraph ignored |
| -Wundef | %0 is not defined, evaluates to 0 |
| -Wunicode | universal character names are only valid in C99 or C++ treating as '\\' followed by identifier |
| -Wunicode | \\%0 used with no following hex digits treating as '\\' followed by identifier |
| -Wunicode | incomplete universal character name treating as '\\' followed by identifier |
| -Wunicode | universal character name refers to a surrogate character |
| -Wunknown-pragmas | unknown pragma ignored |
| -Wunknown-pragmas | pragma STDC FENV_ACCESS ON is not supported, ignoring pragma |
| -Wunused-macros | macro is not used |
Parser Warnings
| Warning | Message |
|---|---|
| -Warc-bridge-casts-disallowed-in-nonarc | '%0' casts have no effect when not using ARC |
| -Wattributes | unknown __declspec attribute %0 ignored |
| -Wavailability | 'unavailable' availability overrides all other availability information |
| -Wc++11-compat | use of right-shift operator ('') in template argument will require parentheses in C++11 |
| -Wc++11-compat | 'auto' storage class specifier is redundant and incompatible with C++11 |
| -Wc++98-c++11-compat | 'decltype(auto)' type specifier is incompatible with C++ standards before C++1y |
| -Wc++98-compat | range-based for loop is incompatible with C++98 |
| -Wc++98-compat | alias declarations are incompatible with C++98 |
| -Wc++98-compat | in-class initialization of non-static data members is incompatible with C++98 |
| -Wc++98-compat | defaulted function definitions are incompatible with C++98 |
| -Wc++98-compat | rvalue references are incompatible with C++98 |
| -Wc++98-compat | reference qualifiers on functions are incompatible with C++98 |
| -Wc++98-compat | inline namespaces are incompatible with C++98 |
| -Wc++98-compat | generalized initializer lists are incompatible with C++98 |
| -Wc++98-compat | trailing return types are incompatible with C++98 |
| -Wc++98-compat | enumeration types with a fixed underlying type are incompatible with C++98 |
| -Wc++98-compat | alignof expressions are incompatible with C++98 |
| -Wc++98-compat | '%0' keyword is incompatible with C++98 |
| -Wc++98-compat | 'decltype' type specifier is incompatible with C++98 |
| -Wc++98-compat | deleted function definitions are incompatible with C++98 |
| -Wc++98-compat | consecutive right angle brackets are incompatible with C++98 (use '> >') |
| -Wc++98-compat | static_assert declarations are incompatible with C++98 |
| -Wc++98-compat | scoped enumerations are incompatible with C++98 |
| -Wc++98-compat | lambda expressions are incompatible with C++98 |
| -Wc++98-compat | attributes are incompatible with C++98 |
| -Wc++98-compat | 'alignas' is incompatible with C++98 |
| -Wc++98-compat | noexcept specifications are incompatible with C++98 |
| -Wc++98-compat | literal operators are incompatible with C++98 |
| -Wc++98-compat | noexcept expressions are incompatible with C++98 |
| -Wc++98-compat | 'nullptr' is incompatible with C++98 |
| -Wc++98-compat-pedantic | extra '' outside of a function is incompatible with C++98 |
| -Wc++98-compat-pedantic | extern templates are incompatible with C++98 |
| -Wc++98-compat-pedantic | commas at the end of enumerator lists are incompatible with C++98 |
| -Wdangling-else | add explicit braces to avoid dangling else |
| -Wdeprecated | Use of 'long' with '__vector' is deprecated |
| -Wdeprecated-declarations | use of C-style parameters in Objective-C method declarations is deprecated |
| -Wdeprecated-register | 'register' storage class specifier is deprecated |
| -Wduplicate-decl-specifier | duplicate '%0' declaration specifier |
| -Wextra-semi | extra ';' after member function definition |
| -Wextra-tokens | "extra tokens at the end of '#pragma omp %0' are ignored |
| -Wgcc-compat | GCC does not allow %0 attribute in this position on a function definition |
| -Wignored-attributes | attribute %0 ignored, because it is not attached to a declaration |
| -Wmicrosoft-exists | dependent %select{__if_not_exists|__if_exists}0 declarations are ignored |
| -Wmissing-selector-name | %0 used as the name of the previous parameter rather than as part of the selector |
| -Wsemicolon-before-method-body | semicolon before method body is ignored |
| -Wsource-uses-openmp | "unexpected '#pragma omp ...' in program |
| -Wstatic-inline-explicit-instantiation | ignoring '%select{static|inline}0' keyword on explicit template instantiation |