Mercurial > hg > octave-lojdl > gnulib-hg
changeset 13818:7d63d145c370
c-stack: work around libsigsegv 2.8 bug
* lib/c-stack.c (SIGSTKSZ): Increase size to avoid alternate stack
overflow on at least PowerPC64.
Signed-off-by: Eric Blake <eblake@redhat.com>
| author | Eric Blake <eblake@redhat.com> |
|---|---|
| date | Thu, 21 Oct 2010 10:29:13 -0600 |
| parents | a2338f3ccd5a |
| children | b7fdddf92299 |
| files | ChangeLog lib/c-stack.c |
| diffstat | 2 files changed, 12 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2010-10-21 Eric Blake <eblake@redhat.com> + + c-stack: work around libsigsegv 2.8 bug + * lib/c-stack.c (SIGSTKSZ): Increase size to avoid alternate stack + overflow on at least PowerPC64. + 2010-10-17 Bruno Haible <bruno@clisp.org> userspec: Drop redundant file.
--- a/lib/c-stack.c +++ b/lib/c-stack.c @@ -53,6 +53,12 @@ #endif #ifndef SIGSTKSZ # define SIGSTKSZ 16384 +#elif HAVE_LIBSIGSEGV && SIGSTKSZ < 16384 +/* libsigsegv 2.6 through 2.8 have a bug where some architectures use + more than the Linux default of an 8k alternate stack when deciding + if a fault was caused by stack overflow. */ +# undef SIGSTKSZ +# define SIGSTKSZ 16384 #endif #include <stdlib.h>