diff options
Diffstat (limited to 'sysdeps/generic/segfault.c')
| -rw-r--r-- | sysdeps/generic/segfault.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/sysdeps/generic/segfault.c b/sysdeps/generic/segfault.c index 5a9e64a105..b0778df6fc 100644 --- a/sysdeps/generic/segfault.c +++ b/sysdeps/generic/segfault.c @@ -163,6 +163,23 @@ install_handler (void) sigemptyset (&sa.sa_mask); sa.sa_flags = SA_RESTART; + /* Maybe we are expected to use an alternative stack. */ + if (getenv ("SEGFAULT_USE_ALTSTACK") != 0) + { + void *stack_mem = malloc (2 * SIGSTKSZ); + struct sigaltstack ss; + + if (stack_mem != NULL) + { + ss.ss_sp = stack_mem; + ss.ss_flags = 0; + ss.ss_size = 2 * SIGSTKSZ; + + if (sigaltstack (&ss, NULL) == 0) + sa.sa_flags |= SA_ONSTACK; + } + } + if (sigs == NULL) sigaction (SIGSEGV, &sa, NULL); else if (sigs[0] == '\0') @@ -191,20 +208,4 @@ install_handler (void) INSTALL_FOR_SIG (SIGABRT, "abrt"); INSTALL_FOR_SIG (SIGFPE, "fpe"); } - - /* Maybe we are expected to use an alternative stack. */ - if (getenv ("SEGFAULT_USE_ALTSTACK") != 0) - { - void *stack_mem = malloc (2 * SIGSTKSZ); - struct sigaltstack ss; - - if (stack_mem != NULL) - { - ss.ss_sp = stack_mem; - ss.ss_flags = SS_ONSTACK; - ss.ss_size = 2 * SIGSTKSZ; - - sigaltstack (&ss, NULL); - } - } } |