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authorUlrich Drepper <drepper@redhat.com>2007-10-28 01:29:21 +0000
committerUlrich Drepper <drepper@redhat.com>2007-10-28 01:29:21 +0000
commit05d691474fded386e6c92b7ce29682d63c128ace (patch)
tree8a88eab2b73dd3a946483c07ed8f4d7f34026bb3 /sysdeps/ia64/backtrace.c
parente6b29af8a314d3a6a538222a98383c215d410ddf (diff)
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[BZ #3112]
2007-10-27  Andreas Jaeger  <aj@suse.de>
	[BZ #3112]
	* sysdeps/ia64/backtrace.c (init): Free shared library if incorrect.
	(__cleanup): Free shared library when exiting.
	* sysdeps/i386/backtrace.c (init): Free shared library if incorrect.
	(__cleanup): Free shared library when exiting.
Diffstat (limited to 'sysdeps/ia64/backtrace.c')
-rw-r--r--sysdeps/ia64/backtrace.c25
1 files changed, 20 insertions, 5 deletions
diff --git a/sysdeps/ia64/backtrace.c b/sysdeps/ia64/backtrace.c
index 3f2b75ec03..423fed80a8 100644
--- a/sysdeps/ia64/backtrace.c
+++ b/sysdeps/ia64/backtrace.c
@@ -1,5 +1,5 @@
 /* Return backtrace of current program state.
-   Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
 
@@ -33,17 +33,18 @@ struct trace_arg
 #ifdef SHARED
 static _Unwind_Reason_Code (*unwind_backtrace) (_Unwind_Trace_Fn, void *);
 static _Unwind_Ptr (*unwind_getip) (struct _Unwind_Context *);
+static void *libgcc_handle;
 
 static void
 init (void)
 {
-  void *handle = __libc_dlopen ("libgcc_s.so.1");
+  libgcc_handle = __libc_dlopen ("libgcc_s.so.1");
 
-  if (handle == NULL)
+  if (libgcc_handle == NULL)
     return;
 
-  unwind_backtrace = __libc_dlsym (handle, "_Unwind_Backtrace");
-  unwind_getip = __libc_dlsym (handle, "_Unwind_GetIP");
+  unwind_backtrace = __libc_dlsym (libgcc_handle, "_Unwind_Backtrace");
+  unwind_getip = __libc_dlsym (libgcc_handle, "_Unwind_GetIP");
   if (unwind_getip == NULL)
     unwind_backtrace = NULL;
 }
@@ -91,3 +92,17 @@ __backtrace (array, size)
 }
 weak_alias (__backtrace, backtrace)
 libc_hidden_def (__backtrace)
+
+
+#ifdef SHARED
+/* Free all resources if necessary.  */
+libc_freeres_fn (free_mem)
+{
+  unwind_backtrace = NULL;
+  if (libgcc_handle != NULL)
+    {
+      __libc_dlclose (libgcc_handle);
+      libgcc_handle = NULL;
+    }
+}
+#endif