+2013-01-23 Joseph Myers <joseph@codesourcery.com>
+
+ * debug/tst-backtrace.h: New file.
+ * debug/tst-backtrace2.c: Include tst-backtrace.h.
+ (ret): Remove variable.
+ (x): Likewise.
+ (FAIL): Remove macro.
+ (NO_INLINE): Likewise.
+ (fn1): Use match function instead of strstr.
+ * debug/tst-backtrace3.c: Include tst-backtrace.h.
+ (ret): Remove variable.
+ (x): Likewise.
+ (FAIL): Remove macro.
+ (NO_INLINE): Likewise.
+ (fn): Use match function instead of strstr.
+ * debug/tst-backtrace4.c: Include tst-backtrace.h.
+ (ret): Remove variable.
+ (x): Likewise.
+ (FAIL): Remove macro.
+ (NO_INLINE): Likewise.
+ (handle_signal): Use match function instead of strstr.
+ * debug/tst-backtrace5.c: Include tst-backtrace.h.
+ (ret): Remove variable.
+ (x): Likewise.
+ (FAIL): Remove macro.
+ (NO_INLINE): Likewise.
+ (handle_signal): Use match function instead of strstr.
+
2013-01-23 Roland McGrath <roland@hack.frob.com>
* misc/sys/cdefs.h (__glibc_unlikely, __glibc_likely): Fix whitespace.
--- /dev/null
+/* 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;
+}
#include <stdlib.h>
#include <string.h>
+#include "tst-backtrace.h"
+
static int do_test (void);
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
-/* Set to a non-zero value if the test fails. */
-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)
-
/* The backtrace should include at least f1, f2, f3, and do_test. */
#define NUM_FUNCTIONS 4
-/* Use this attribute to prevent inlining, so that all expected frames
- are present. */
-#define NO_INLINE __attribute__ ((noinline))
-
NO_INLINE void
fn1 (void)
{
for (i = 0; i < n; ++i)
printf ("Function %d: %s\n", i, symbols[i]);
/* Check that the function names obtained are accurate. */
- if (strstr (symbols[0], "fn1") == NULL)
+ if (!match (symbols[0], "fn1"))
{
FAIL ();
return;
}
/* Symbol names are not available for static functions, so we do not
check f2. */
- if (strstr (symbols[2], "fn3") == NULL)
+ if (!match (symbols[2], "fn3"))
{
FAIL ();
return;
#include <stdlib.h>
#include <string.h>
+#include "tst-backtrace.h"
+
static int do_test (void);
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
-/* Set to a non-zero value if the test fails. */
-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)
-
/* The backtrace should include at least 3 * fn, and do_test. */
#define NUM_FUNCTIONS 4
-/* Use this attribute to prevent inlining, so that all expected frames
- are present. */
-#define NO_INLINE __attribute__ ((noinline))
-
NO_INLINE int
fn (int c)
{
printf ("Function %d: %s\n", i, symbols[i]);
/* Check that the function names obtained are accurate. */
for (i = 0; i < n - 1; ++i)
- if (strstr (symbols[i], "fn") == NULL)
+ if (!match (symbols[i], "fn"))
{
FAIL ();
return 1;
#include <signal.h>
#include <unistd.h>
+#include "tst-backtrace.h"
+
static int do_test (void);
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
-/* 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)
-
/* The backtrace should include at least handle_signal, a signal
trampoline, 3 * fn, and do_test. */
#define NUM_FUNCTIONS 6
-/* Use this attribute to prevent inlining, so that all expected frames
- are present. */
-#define NO_INLINE __attribute__ ((noinline))
-
volatile int sig_handled = 0;
void
for (i = 0; i < n; ++i)
printf ("Function %d: %s\n", i, symbols[i]);
/* Check that the function names obtained are accurate. */
- if (strstr (symbols[0], "handle_signal") == NULL)
+ if (!match (symbols[0], "handle_signal"))
{
FAIL ();
return;
}
/* Do not check name for signal trampoline. */
for (i = 2; i < n - 1; i++)
- if (strstr (symbols[i], "fn") == NULL)
+ if (!match (symbols[i], "fn"))
{
FAIL ();
return;
#include <signal.h>
#include <unistd.h>
+#include "tst-backtrace.h"
+
static int do_test (void);
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
-/* 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)
-
/* The backtrace should include at least handle_signal, a signal
trampoline, read, 3 * fn, and do_test. */
#define NUM_FUNCTIONS 7
-/* Use this attribute to prevent inlining, so that all expected frames
- are present. */
-#define NO_INLINE __attribute__ ((noinline))
-
void
handle_signal (int signum)
{
for (i = 0; i < n; ++i)
printf ("Function %d: %s\n", i, symbols[i]);
/* Check that the function names obtained are accurate. */
- if (strstr (symbols[0], "handle_signal") == NULL)
+ if (!match (symbols[0], "handle_signal"))
{
FAIL ();
return;
}
/* Do not check name for signal trampoline. */
i = 2;
- if (strstr (symbols[i++], "read") == NULL)
+ if (!match (symbols[i++], "read"))
{
/* Perhaps symbols[2] is __kernel_vsyscall? */
- if (strstr (symbols[i++], "read") == NULL)
+ if (!match (symbols[i++], "read"))
{
FAIL ();
return;
}
}
for (; i < n - 1; i++)
- if (strstr (symbols[i], "fn") == NULL)
+ if (!match (symbols[i], "fn"))
{
FAIL ();
return;
projects / external / glibc.git / commitdiff