利用dwarfdump命令和dsym文件链接binary image，查看crash log中...

首先需要打包的dsym文件，然后在终端中输入命令：

$ dwarfdump --lookup=ADDRESS --arch=ARCH {MyApp.app.dsym}

NAME
    dwarfdump -- dump DWARF debug information.

SYNOPSIS
    dwarfdump [options] file1 file2 ...

DESCRIPTION
    For each operand that names a mach-o or 32 bit ELF file, dwarfdump
    disassembles the DWARF data found within the file. Only the .debug_info
    section is disassembled unless one of the --debug-XXXX or --all options
    are specified.

    The following options are available:

    -a, --all
        Dump disassembly of all DWARF sections -- by default only the
        .debug_info section is disassembled, or individual sections can be
        specified by using the --debug-XXXX options.

    --arch=ARCH
        Dump DWARF debug information for the specified CPU architecture.
        Architectures may be specified by name or by number.  This option
        can be specified multiple times, once for each desired
        architecture. All architectures will be disassembled by default.

    -c, --show-children
        Show a DIE's children when using the --debug-info=OFFSET, --find,
        and --name options.

    --eh-frame[=SECTION]
        Dump exception handling frame information from the optional SECTION
        parameter. The __eh_frame section will be dumped by default.

    -e, --english
        Print dwarf tags and attributes in a more readable format instead
        of using the DWARF TAG_ and AT_ definitions.

    --file-stats[=size]
        Show file composition statistics for any input files. Each file's
        contents are analyzed and broken down into byte counts for the
        following categories: symbol table, string table, text and code,
        DWARF debug information, STABS debug information, and other. When
        multiple files are specified, byte count totals for each category
        will be displayed at the end of the table.  Specify the optional
        'size' argument to show all byte count results using unit suffixes:
        Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte. This
        option can be useful in tracking the size and makeup of mach-o
        binary files, and also allows easy comparison between DWARF and
        STABS built binaries and related object files.

    -f PATTERN, --find=PATTERN
        Search for the exact text PATTERN in the .debug_pubnames section
        and print the matching debug information entries. Use the --regex
        option to have PATTERN become a regular expression for more
        flexible pattern matching.

        When there is no .debug_pubnames section or the name of the DIE you
        are looking for is not found in the .debug_pubnames section, try
        using the slower but more complete --name option.

    -F, --show-form
        Show DWARF form types after the DWARF attribute types.

    -h, -?, --help
        Show help and usage for this command.

    -i, --ignore-case
        Ignore case distinctions in when finding by name using strings or
        regular expressions.

    -n PATTERN, --name=PATTERN
        Find and print all DIE entries whose name (DW_AT_name attribute)
        matches the exact text in PATTERN. Use the --regex option to
        have PATTERN become a regular expression for more flexible pattern
        matching.

    --lookup=ADDRESS
        Lookup ADDRESS in the debug information and print out any available
        file, function, block and line table details.

    -o PATH, --out-file=PATH
        Redirect output to a file specified by PATH.

    -p, --show-parents
        Show a DIE's parents when using the --debug-info=OFFSET, --find,
        and --name options.

    -r N, --recurse-depth=N
        Only recurse to a child depth of N when displaying the DWARF
        information.

    -u, --uuid
        Show the UUID for each architecture.

    -x, --regex
        Treat any PATTERN strings as regular expressions when searching
        instead of just as an exact string match.

    -v, --verbose
        Display verbose information when dumping. This can help to debug
        DWARF issues.

    --verify
        Verify the structure of the DWARF information by verifying the
        compile unit chains, die relationships graph, and address ranges.

    --version
        Display the current version and build date of the dwarfdump binary.

    --debug-abbrev
    --debug-aranges
    --debug-frame[=OFFSET]
    --debug-info[=OFFSET]
    --debug-inlined
    --debug-line[=OFFSET]
    --debug-macinfo[=OFFSET]
    --debug-pubnames[=PATTERN]
    --debug-pubtypes[=PATTERN]
    --debug-str
    --apple-names[=PATTERN]
    --apple-types[=PATTERN]
    --apple-namespaces[=PATTERN]
    --apple-objc[=PATTERN]
        Dump the specified DWARF section by name. Only the .debug_info
        section is disassembled by default. Some entries support adding a
        '=OFFSET' as a way to provide an optional offset of the exact entry
        to dump within the respective section. When an OFFSET is provided,
        only the entry at that offset will be dumped, else the entire
        section will be dumped. Some options support an optional '=PATTERN'
        parameter that will search the section for an entry with a matching
        name. Children of items at OFFSETs can be dumped by also using the
        --show-children option where applicable.

以上是dwarfdump命令的使用方法介绍