文章目录
怎么才能让core文件带有宏定义，
需要使用 gcc -g3 -gdwarf-4 -ggdb func.c
这里使用了dwarf格式的调试信息，同时将调试信息的级别设置为了3级；
然后再使用gdb 看 coredump文件，就可以看到所用的宏定义；
(gdb) info macros
Defined at /root/mzhan017/test/func.c:21
#define A 3
gdb里的说明
gdb knows about preprocessor macros and can show you their expansion (see Chapter 12
[Macros], page 189). Most compilers do not include information about preprocessor macros
in the debugging information if you specify the -g flag alone. Version 3.1 and later of gcc,
the gnu C compiler, provides macro information if you are using the DWARF debugging
format, and specify the option -g3.
See Section “Options for Debugging Your Program or GCC” in Using the gnu Compiler