tst-backtrace4: expand output even on failures

When debugging failures in this test, it's helpful to see as much output
as possible.  So rather than returning immediately, let the code run as
far as it can.  We still mark failures as soon as they happen.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/ChangeLog b/ChangeLog
index 8e06921..73d38ee 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2014-02-08  Mike Frysinger  <vapier@gentoo.org>
 
+       * debug/tst-backtrace4.c (handle_signal): Add NUM_FUNCTIONS to output.
+       Only return early when n is <= 0.  Delete unused return statement.
+
+2014-02-08  Mike Frysinger  <vapier@gentoo.org>
+
        * debug/Makefile (CFLAGS-tst-longjmp_chk3.c): Define.
        (CPPFLAGS-tst-longjmp_chk3.c): Likewise.
        * debug/tst-longjmp_chk3.c: New file.

diff --git a/debug/tst-backtrace4.c b/debug/tst-backtrace4.c
index a98775a..26fbdd0 100644 (file)
--- a/debug/tst-backtrace4.c
+++ b/debug/tst-backtrace4.c
@@ -49,12 +49,16 @@ handle_signal (int signum)
 
   /* Get the backtrace addresses.  */
   n = backtrace (addresses, sizeof (addresses) / sizeof (addresses[0]));
-  printf ("Obtained backtrace with %d functions\n", n);
-  /*  Check that there are at least six functions.  */
+  printf ("Obtained backtrace with %d functions (but wanted at least %d)\n",
+         n, NUM_FUNCTIONS);
+  /* Check that there are at least six functions.  */
   if (n < NUM_FUNCTIONS)
     {
       FAIL ();
-      return;
+      /* Only return if we got no symbols at all.  The partial output is
+        still useful for debugging failures.  */
+      if (n <= 0)
+       return;
     }
   /* Convert them to symbols.  */
   symbols = backtrace_symbols (addresses, n);
@@ -68,10 +72,7 @@ handle_signal (int signum)
     printf ("Function %d: %s\n", i, symbols[i]);
   /* Check that the function names obtained are accurate.  */
   if (!match (symbols[0], "handle_signal"))
-    {
-      FAIL ();
-      return;
-    }
+    FAIL ();
   /* Do not check name for signal trampoline.  */
   for (i = 2; i < n - 1; i++)
     if (!match (symbols[i], "fn"))