diff options
| author | Roland McGrath <roland@gnu.org> | 1992-06-05 02:23:07 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 1992-06-05 02:23:07 +0000 |
| commit | aa24af5c817db563a1a587b591786588cfc989ff (patch) | |
| tree | 3f747ec4637ab3076aa81f04259c599a82393d9b /setjmp | |
| parent | bd9f5c4d71e843165cb07e9aae6c282c0b284799 (diff) | |
Formerly setjmp/setjmp.h.~12~
Diffstat (limited to 'setjmp')
| -rw-r--r-- | setjmp/setjmp.h | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/setjmp/setjmp.h b/setjmp/setjmp.h index 3d4347c86e..702236073d 100644 --- a/setjmp/setjmp.h +++ b/setjmp/setjmp.h @@ -58,8 +58,9 @@ typedef struct extern void __sigjmp_save __P ((sigjmp_buf __env, int __savemask)); #ifdef __GNUC__ #define sigsetjmp(env, savemask) \ - ({ sigjmp_buf *__e = (env); \ - __sigjmp_save (*__e, (savemask)), __setjmp ((*__e)[0].__jmpbuf) }) + ({ __typeof ((*((sigjmp_buf *) 0))[0]) *__e = (env); \ + __sigjmp_save (__e, (savemask)); \ + __setjmp (__e[0].__jmpbuf); }) #else /* Not strictly POSIX-compliant, because it evaluates ENV more than once. */ #define sigsetjmp(env, savemask) \ @@ -106,16 +107,13 @@ extern int __setjmp __P ((__jmp_buf __env)); #ifdef __USE_BSD extern __NORETURN void _longjmp __P ((__const jmp_buf __env, int __val)); -#define _setjmp(env) sigsetjmp((env), 0) - -#ifdef __OPTIMIZE__ -#define _longjmp(env, val) siglongjmp ((env), (val)) -#endif /* Optimizing. */ #endif /* Use BSD. */ - #ifdef __FAVOR_BSD +/* We are in the mode in which `setjmp' and `longjmp' save and restore + the signal mask, and `jmp_buf' is `sigjmp_buf'. */ + #undef setjmp #undef longjmp @@ -125,6 +123,13 @@ extern __NORETURN void _longjmp __P ((__const jmp_buf __env, int __val)); #define longjmp(env, val) siglongjmp ((env), (val)) #endif /* Optimizing. */ +#define _setjmp(env) sigsetjmp ((env), 0) + +#else /* Don't favor BSD. */ + +/* `setjmp' and `_setjmp' are the same. */ +#define _setjmp(env) setjmp (env) + #endif /* Favor BSD. */ |