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9693501c15
this is necessary to meet the C++ ABI target. alternatives were considered to avoid the size increase for non-sig jmp_buf objects, but they seemed to have worse properties. moreover, the relative size increase is only extreme on x86[_64]; one way of interpreting this is that, if the size increase from this patch makes jmp_buf use too much memory, then the program was already using too much memory when built for non-x86 archs.
43 lines
792 B
C
43 lines
792 B
C
#ifndef _SETJMP_H
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#define _SETJMP_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <features.h>
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#include <bits/setjmp.h>
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typedef struct __jmp_buf_tag {
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__jmp_buf __jb;
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unsigned long __fl;
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unsigned long __ss[128/sizeof(long)];
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} jmp_buf[1];
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#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
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|| defined(_BSD_SOURCE)
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typedef jmp_buf sigjmp_buf;
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int sigsetjmp (sigjmp_buf, int);
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_Noreturn void siglongjmp (sigjmp_buf, int);
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#endif
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#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
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|| defined(_BSD_SOURCE)
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int _setjmp (jmp_buf);
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_Noreturn void _longjmp (jmp_buf, int);
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#endif
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int setjmp (jmp_buf);
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_Noreturn void longjmp (jmp_buf, int);
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#define setjmp setjmp
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#define longjmp longjmp
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#ifdef __cplusplus
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}
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#endif
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#endif
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