diff options
Diffstat (limited to 'src/H5detect.c')
| -rw-r--r-- | src/H5detect.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/src/H5detect.c b/src/H5detect.c index cb7cebe..6943972 100644 --- a/src/H5detect.c +++ b/src/H5detect.c @@ -248,12 +248,13 @@ precision (detected_t *d) volatile TYPE _val=0; \ volatile size_t _ano=0; \ void (*_handler)(int) = signal(SIGBUS, sigbus_handler); \ + void (*_handler2)(int) = signal(SIGSEGV, sigsegv_handler); \ \ _buf = malloc(sizeof(TYPE)+align_g[NELMTS(align_g)-1]); \ if (setjmp(jbuf_g)) _ano++; \ if (_ano<NELMTS(align_g)) { \ - *((TYPE*)(_buf+align_g[_ano])) = _val; /*possible SIGBUS*/ \ - _val = *((TYPE*)(_buf+align_g[_ano])); /*possible SIGBUS*/ \ + *((TYPE*)(_buf+align_g[_ano])) = _val; /*possible SIGBUS or SEGSEGV*/ \ + _val = *((TYPE*)(_buf+align_g[_ano])); /*possible SIGBUS or SEGSEGV*/ \ (ALIGN)=align_g[_ano]; \ } else { \ (ALIGN)=0; \ @@ -261,6 +262,7 @@ precision (detected_t *d) } \ free(_buf); \ signal(SIGBUS, _handler); /*restore original handler*/ \ + signal(SIGSEGV, _handler2); /*restore original handler*/ \ } #else #define ALIGNMENT(TYPE,ALIGN) (ALIGN)=0 @@ -315,6 +317,31 @@ precision (detected_t *d) /*------------------------------------------------------------------------- + * Function: sigsegv_handler + * + * Purpose: Handler for SIGSEGV. We use signal() instead of sigaction() + * because it's more portable to non-Posix systems. Although + * it's not nearly as nice to work with, it does the job for + * this simple stuff. + * + * Return: Returns via longjmp to jbuf_g. + * + * Programmer: Robb Matzke + * Thursday, March 18, 1999 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +static void +sigsegv_handler(int UNUSED signo) +{ + signal(SIGSEGV, sigsegv_handler); + longjmp(jbuf_g, 1); +} + + +/*------------------------------------------------------------------------- * Function: sigbus_handler * * Purpose: Handler for SIGBUS. We use signal() instead of sigaction() |