diff options
Diffstat (limited to 'sysdeps/posix')
| -rw-r--r-- | sysdeps/posix/libc_fatal.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/sysdeps/posix/libc_fatal.c b/sysdeps/posix/libc_fatal.c index 25af8bd413..c9189194dd 100644 --- a/sysdeps/posix/libc_fatal.c +++ b/sysdeps/posix/libc_fatal.c @@ -75,11 +75,16 @@ __libc_message (enum __libc_message_action action, const char *fmt, ...) FATAL_PREPARE; #endif - /* Open a descriptor for /dev/tty unless the user explicitly - requests errors on standard error. */ - const char *on_2 = __libc_secure_getenv ("LIBC_FATAL_STDERR_"); - if (on_2 == NULL || *on_2 == '\0') - fd = open_not_cancel_2 (_PATH_TTY, O_RDWR | O_NOCTTY | O_NDELAY); + /* Don't call __libc_secure_getenv if we aren't doing backtrace, which + may access the corrupted stack. */ + if ((action & do_backtrace)) + { + /* Open a descriptor for /dev/tty unless the user explicitly + requests errors on standard error. */ + const char *on_2 = __libc_secure_getenv ("LIBC_FATAL_STDERR_"); + if (on_2 == NULL || *on_2 == '\0') + fd = open_not_cancel_2 (_PATH_TTY, O_RDWR | O_NOCTTY | O_NDELAY); + } if (fd == -1) fd = STDERR_FILENO; |