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9{
10 uid_t uid1;
11 return 0;
12}
$gdb a.out
(gdb)b 11
(gdb)ptype uid_t
真相已经出现了。
/usr/include/sys/types.h:82
typedef __uid_t uid_t;
/usr/include/bits/types.h:135
__STD_TYPE __UID_T_TYPE __uid_t;
/usr/include/bits/typesizes.h:31
#define __UID_T_TYPE __U32_TYPE
/usr/include/bits/types.h:102
#define __U32_TYPE unsigned int
/usr/include/bits/types.h:127
# define __STD_TYPE typedef