From 62bd3f2351a7665e681f00ad6dd92b08b8c68b72 Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Fri, 20 Jun 2014 15:50:53 +0200
Subject: libshouldbeinlibc: add assert(3) variant that prints backtraces
* libshouldbeinlibc/Makefile: Add new files
* libshouldbeinlibc/assert-backtrace.{c,h}: New files.
---
libshouldbeinlibc/assert-backtrace.h | 60 ++++++++++++++++++++++++++++++++++++
1 file changed, 60 insertions(+)
create mode 100644 libshouldbeinlibc/assert-backtrace.h
(limited to 'libshouldbeinlibc/assert-backtrace.h')
diff --git a/libshouldbeinlibc/assert-backtrace.h b/libshouldbeinlibc/assert-backtrace.h
new file mode 100644
index 00000000..c54b8106
--- /dev/null
+++ b/libshouldbeinlibc/assert-backtrace.h
@@ -0,0 +1,60 @@
+/* Augment failing assertions with backtraces.
+
+ Copyright (C) 1994-2015 Free Software Foundation, Inc.
+
+ This file is part of the GNU Hurd.
+
+ The GNU Hurd is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ The GNU Hurd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with the GNU Hurd. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifndef __ASSERT_BACKTRACE__
+#define __ASSERT_BACKTRACE__
+
+#ifdef NDEBUG
+
+#define assert_backtrace(expr) ((void) 0)
+#define assert_backtrace_perror(errnum) ((void) 0)
+
+#else /* NDEBUG */
+
+/* This prints an "Assertion failed" message, prints a stack trace,
+ and aborts. */
+void __assert_fail_backtrace (const char *assertion,
+ const char *file,
+ unsigned int line,
+ const char *function)
+ __attribute__ ((noreturn, unused));
+
+/* Likewise, but prints the error text for ERRNUM. */
+void __assert_perror_fail_backtrace (int errnum,
+ const char *file,
+ unsigned int line,
+ const char *function)
+ __attribute__ ((noreturn, unused));
+
+#define assert_backtrace(expr) \
+ ((expr) \
+ ? (void) 0 \
+ : __assert_fail_backtrace (__STRING(expr), \
+ __FILE__, __LINE__, \
+ __PRETTY_FUNCTION__))
+
+#define assert_perror_backtrace(expr) \
+ ((expr == 0) \
+ ? (void) 0 \
+ : __assert_perror_fail_backtrace (expr, \
+ __FILE__, __LINE__, \
+ __PRETTY_FUNCTION__))
+
+#endif /* NDEBUG */
+#endif /* __ASSERT_BACKTRACE__ */
--
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