From 10ab13e5406be8ab69a80e3ae0286a80481b9ec2 Mon Sep 17 00:00:00 2001 From: Bruno Haible Date: Sat, 24 Jan 2009 14:05:48 +0100 Subject: [PATCH] On HP-UX, don't pretend it was a SIGSEGV when it was a stack overflow. --- ChangeLog | 6 ++++++ lib/c-stack.c | 28 ++++++++++++++-------------- 2 files changed, 20 insertions(+), 14 deletions(-) diff --git a/ChangeLog b/ChangeLog index f8fc16f8a..140690932 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,11 @@ 2009-01-24 Bruno Haible + * lib/c-stack.c (segv_handler): If !HAVE_XSI_STACK_OVERFLOW_HEURISTIC, + set signo = 0 also if info->si_code <= 0. Needed on HP-UX 11.11. + Reported by Gary V. Vaughan . + +2009-01-24 Bruno Haible + * lib/c-strtod.h (c_strtod, c_strtold): Add specification. 2009-01-23 Bruno Haible diff --git a/lib/c-stack.c b/lib/c-stack.c index e5e3ab610..d260b47aa 100644 --- a/lib/c-stack.c +++ b/lib/c-stack.c @@ -239,21 +239,21 @@ segv_handler (int signo, siginfo_t *info, void *context __attribute__ ((unused))) { /* Clear SIGNO if it seems to have been a stack overflow. */ - if (0 < info->si_code) - { # if ! HAVE_XSI_STACK_OVERFLOW_HEURISTIC - /* We can't easily determine whether it is a stack overflow; so - assume that the rest of our program is perfect (!) and that - this segmentation violation is a stack overflow. - - Note that although both Linux and Solaris provide - sigaltstack, SA_ONSTACK, and SA_SIGINFO, currently only - Solaris satisfies the XSI heueristic. This is because - Solaris populates uc_stack with the details of the - interrupted stack, while Linux populates it with the details - of the current stack. */ - signo = 0; + /* We can't easily determine whether it is a stack overflow; so + assume that the rest of our program is perfect (!) and that + this segmentation violation is a stack overflow. + + Note that although both Linux and Solaris provide + sigaltstack, SA_ONSTACK, and SA_SIGINFO, currently only + Solaris satisfies the XSI heueristic. This is because + Solaris populates uc_stack with the details of the + interrupted stack, while Linux populates it with the details + of the current stack. */ + signo = 0; # else + if (0 < info->si_code) + { /* If the faulting address is within the stack, or within one page of the stack end, assume that it is a stack overflow. */ @@ -278,8 +278,8 @@ segv_handler (int signo, siginfo_t *info, write (STDERR_FILENO, buf, strlen (buf)); } # endif -# endif } +# endif die (signo); } -- 2.11.0