Mercurial > hg > octave-nkf > gnulib-hg
diff lib/c-stack.c @ 10358:37fd490ee38d
c-stack: test that stack overflow can be caught
* m4/c-stack.m4 (AC_SYS_XSI_STACK_OVERFLOW_HEURISTIC): Also check
that platform allows handling stack overflow; at least OS/2 EMX
has sigaltstack, but crashes before transferring control to
handler on stack overflow.
* lib/c-stack.c [HAVE_SIGALTSTACK]: Adjust conditions to also
check for HAVE_STACK_OVERFLOW_HANDLING.
Reported by Elbert Pol.
Signed-off-by: Eric Blake <ebb9@byu.net>
| author | Eric Blake <ebb9@byu.net> |
|---|---|
| date | Mon, 25 Aug 2008 06:26:56 -0600 |
| parents | 9c24129c10e2 |
| children | 9867f4fee019 |
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line diff
--- a/lib/c-stack.c +++ b/lib/c-stack.c @@ -117,7 +117,8 @@ abort (); } -#if (HAVE_SIGALTSTACK && HAVE_DECL_SIGALTSTACK) || HAVE_LIBSIGSEGV +#if (HAVE_SIGALTSTACK && HAVE_DECL_SIGALTSTACK \ + && HAVE_STACK_OVERFLOW_HANDLING) || HAVE_LIBSIGSEGV /* Storage for the alternate signal stack. */ static union @@ -210,7 +211,7 @@ return 0; } -#elif HAVE_SIGALTSTACK && HAVE_DECL_SIGALTSTACK +#elif HAVE_SIGALTSTACK && HAVE_DECL_SIGALTSTACK && HAVE_STACK_OVERFLOW_HANDLING /* Direction of the C runtime stack. This function is async-signal-safe. */ @@ -316,7 +317,8 @@ return sigaction (SIGSEGV, &act, NULL); } -#else /* ! ((HAVE_SIGALTSTACK && HAVE_DECL_SIGALTSTACK) || HAVE_LIBSIGSEGV) */ +#else /* ! ((HAVE_SIGALTSTACK && HAVE_DECL_SIGALTSTACK + && HAVE_STACK_OVERFLOW_HANDLING) || HAVE_LIBSIGSEGV) */ int c_stack_action (void (*action) (int) __attribute__ ((unused)))