diff options
Diffstat (limited to 'src/common/backtrace.c')
| -rw-r--r-- | src/common/backtrace.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/src/common/backtrace.c b/src/common/backtrace.c index bed0442471..3b762b68e3 100644 --- a/src/common/backtrace.c +++ b/src/common/backtrace.c @@ -1,6 +1,18 @@ -/* Copyright (c) 2013-2015, The Tor Project, Inc. */ +/* Copyright (c) 2013-2016, The Tor Project, Inc. */ /* See LICENSE for licensing information */ +/** + * \file backtrace.c + * + * \brief Functions to produce backtraces on bugs, crashes, or assertion + * failures. + * + * Currently, we've only got an implementation here using the backtrace() + * family of functions, which are sometimes provided by libc and sometimes + * provided by libexecinfo. We tie into the sigaction() backend in order to + * detect crashes. + */ + #define __USE_GNU #define _GNU_SOURCE 1 @@ -215,9 +227,10 @@ int configure_backtrace_handler(const char *tor_version) { tor_free(bt_version); - if (!tor_version) - tor_version = ""; - tor_asprintf(&bt_version, "Tor %s", tor_version); + if (tor_version) + tor_asprintf(&bt_version, "Tor %s", tor_version); + else + tor_asprintf(&bt_version, "Tor"); return install_bt_handler(); } |