1 files changed, 48 insertions, 0 deletions
diff --git a/libc/debug/tst-backtrace.h b/libc/debug/tst-backtrace.h
new file mode 100644
index 000000000..0a89488f0
--- /dev/null
+++ b/libc/debug/tst-backtrace.h
@@ -0,0 +1,48 @@
+/* Test backtrace and backtrace_symbols: common code for examining
+   backtraces.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+/* Set to a non-zero value if the test fails.  */
+volatile int ret;
+
+/* Accesses to X are used to prevent optimization.  */
+volatile int x;
+
+/* Called if the test fails.  */
+#define FAIL() \
+  do { printf ("Failure on line %d\n", __LINE__); ret = 1; } while (0)
+
+/* Use this attribute to prevent inlining, so that all expected frames
+   are present.  */
+#define NO_INLINE __attribute__ ((noinline))
+
+/* Look for a match in SYM from backtrace_symbols to NAME, a fragment
+   of a function name.  Ignore the filename before '(', but presume
+   that the function names are chosen so they cannot accidentally
+   match the hex offset before the closing ')'. */
+
+static inline bool
+match (const char *sym, const char *name)
+{
+  char *p = strchr (sym, '(');
+  return p != NULL && strstr (p, name) != NULL;
+}