令人蛋疼的错误提示 0xcdcdcdcd ,0xdddddddd ,0xfeeefeee ,0xcccccccc ,0xabababab

http://www.cnblogs.com/pcchinadreamfly/archive/2012/04/26/2471317.html

在写C++程序的时候，老实0xcdcdcdcd ,0xdddddddd ,0xfeeefeee ,0xcccccccc ,0xabababab这种提示，不知何解，google之，错误是这样产生

* 0xABABABAB : Used by Microsoft's HeapAlloc() to mark "no man's land" guard bytes after allocated heap memory

* 0xABADCAFE : A startup to this value to initialize all free memory to catch errant pointers

* 0xBAADF00D : Used by Microsoft's LocalAlloc(LMEM_FIXED) to mark uninitialised allocated heap memory

* 0xBADCAB1E : Error Code returned to the Microsoft eVC debugger when connection is severed to the debugger

* 0xBEEFCACE : Used by Microsoft .NET as a magic number in resource files

* 0xCCCCCCCC : Used by Microsoft's C++ debugging runtime library to mark uninitialised stack memory

* 0xCDCDCDCD : Used by Microsoft's C++ debugging runtime library to mark uninitialised heap memory

* 0xDEADDEAD : A Microsoft Windows STOP Error code used when the user manually initiates the crash

* 0xFDFDFDFD : Used by Microsoft's C++ debugging heap to mark "no man's land" guard bytes before and after allocated heap memory

* 0xFEEEFEEE : Used by Microsoft's HeapFree() to mark freed heap memory

VC++ 在Debug编译方式编译的程序中，会跟踪用new分配的内存。新分配的内存会用0xcd(助记词为Cleared Data)填充，防止未初始化；当它被delete后，又会被0xdd(Dead   Data)填充，防止再次被使用。这样有利于调试内存错误。之所以选这样的填充模式，是因为：

1.大数，若被当成指针就会越界 

2.奇数，指针通常指向偶数地址  

3.非0,这样不会和   NULL   混淆。 
在Release版中不会有这些字节填充。

 前两天在编写程序的时候又遇到0Xbaadfd这个提示，于是到网上去查询，得到了一些结果，作为上面的补充：

Address  Offset After HeapAlloc() After malloc() During free() After HeapFree() Comments
0x00320FD8  -40    0x01090009    0x01090009     0x01090009    0x0109005A     Win32 heap info
0x00320FDC  -36    0x01090009    0x00180700     0x01090009    0x00180400     Win32 heap info
0x00320FE0  -32    0xBAADF00D    0x00320798     0xDDDDDDDD    0x00320448     Ptr to next CRT heap block (allocated earlier in time)
0x00320FE4  -28    0xBAADF00D    0x00000000     0xDDDDDDDD    0x00320448     Ptr to prev CRT heap block (allocated later in time)
0x00320FE8  -24    0xBAADF00D    0x00000000     0xDDDDDDDD    0xFEEEFEEE     Filename of malloc() call
0x00320FEC  -20    0xBAADF00D    0x00000000     0xDDDDDDDD    0xFEEEFEEE     Line number of malloc() call
0x00320FF0  -16    0xBAADF00D    0x00000008     0xDDDDDDDD    0xFEEEFEEE     Number of bytes to malloc()
0x00320FF4  -12    0xBAADF00D    0x00000001     0xDDDDDDDD    0xFEEEFEEE     Type (0=Freed, 1=Normal, 2=CRT use, etc)
0x00320FF8  -8     0xBAADF00D    0x00000031     0xDDDDDDDD    0xFEEEFEEE     Request #, increases from 0
0x00320FFC  -4     0xBAADF00D    0xFDFDFDFD     0xDDDDDDDD    0xFEEEFEEE     No mans land
0x00321000  +0     0xBAADF00D    0xCDCDCDCD     0xDDDDDDDD    0xFEEEFEEE     The 8 bytes you wanted
0x00321004  +4     0xBAADF00D    0xCDCDCDCD     0xDDDDDDDD    0xFEEEFEEE     The 8 bytes you wanted
0x00321008  +8     0xBAADF00D    0xFDFDFDFD     0xDDDDDDDD    0xFEEEFEEE     No mans land
0x0032100C  +12    0xBAADF00D    0xBAADF00D     0xDDDDDDDD    0xFEEEFEEE     Win32 heap allocations are rounded up to 16 bytes
0x00321010  +16    0xABABABAB    0xABABABAB     0xABABABAB    0xFEEEFEEE     Win32 heap bookkeeping
0x00321014  +20    0xABABABAB    0xABABABAB     0xABABABAB    0xFEEEFEEE     Win32 heap bookkeeping
0x00321018  +24    0x00000010    0x00000010     0x00000010    0xFEEEFEEE     Win32 heap bookkeeping
0x0032101C  +28    0x00000000    0x00000000     0x00000000    0xFEEEFEEE     Win32 heap bookkeeping
0x00321020  +32    0x00090051    0x00090051     0x00090051    0xFEEEFEEE     Win32 heap bookkeeping
0x00321024  +36    0xFEEE0400    0xFEEE0400     0xFEEE0400    0xFEEEFEEE     Win32 heap bookkeeping
0x00321028  +40    0x00320400    0x00320400     0x00320400    0xFEEEFEEE     Win32 heap bookkeeping

0x0032102C  +44    0x00320400    0x00320400     0x00320400    0xFEEEFEEE     Win32 heap bookkeeping