From 2de7874e55b344d5270abc8832950cf09c6d7dd7 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Mon, 8 Jun 1998 19:06:31 +0000
Subject: Update.

1998-06-08 18:57  Ulrich Drepper  <drepper@cygnus.com>

	* Makeconfig (subdirs): Add debug.
	* configure.in: Use sysdeps/generic/elf subdir if ELF platform.
	* libc.map: Add __backtrace, __backtrace_symbols, backtrace and
	backtrace_symbols.
	* sysdeps/generic/backtrace.c: New file.
	* sysdeps/generic/backtracesyms.c: New file.
	* sysdeps/generic/elf/backtracesyms.c: New file.
	* sysdeps/i386/backtrace.c: New file.
	* debug/Makefile: New file.
	* debug/backtrace-tst.c: New file.
	* debug/execinfo.h: New file.
---
 debug/backtrace-tst.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 debug/backtrace-tst.c

(limited to 'debug/backtrace-tst.c')

diff --git a/debug/backtrace-tst.c b/debug/backtrace-tst.c
new file mode 100644
index 0000000..d899fb0
--- /dev/null
+++ b/debug/backtrace-tst.c
@@ -0,0 +1,44 @@
+#include <execinfo.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+static int
+compare (const void *p1, const void *p2)
+{
+  void *ba[20];
+  int n = backtrace (ba, sizeof (ba) / sizeof (ba[0]));
+  if (n != 0)
+    {
+      char **names = backtrace_symbols (ba, n);
+      if (names != NULL)
+	{
+	  int i;
+	  printf ("called from %s\n", names[0]);
+	  for (i = 1; i < n; ++i)
+	    printf ("            %s\n", names[i]);
+	  free (names);
+	}
+    }
+
+  return *(uint32_t *) p1 - *(uint32_t *) p2;
+}
+
+
+int
+main (int argc, char *argv[])
+{
+  uint32_t arr[20];
+  size_t cnt;
+
+  for (cnt = 0; cnt < sizeof (arr) / sizeof (arr[0]); ++cnt)
+    arr[cnt] = random ();
+
+  qsort (arr, sizeof (arr) / sizeof (arr[0]), sizeof (arr[0]), compare);
+
+  for (cnt = 0; cnt < sizeof (arr) / sizeof (arr[0]); ++cnt)
+    printf ("%" PRIx32 "\n", arr[cnt]);
+
+  return 0;
+}
-- 
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