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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/i386
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/i386')
-rw-r--r--sysdeps/i386/backtrace.c35
1 files changed, 27 insertions, 8 deletions
diff --git a/sysdeps/i386/backtrace.c b/sysdeps/i386/backtrace.c
index 8b61913dde..cf3b2719b9 100644
--- a/sysdeps/i386/backtrace.c
+++ b/sysdeps/i386/backtrace.c
@@ -1,5 +1,5 @@
/* Return backtrace of current program state.
- Copyright (C) 1998, 2000, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1998, 2000, 2003-2005, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
@@ -36,21 +36,26 @@ static _Unwind_Reason_Code (*unwind_backtrace) (_Unwind_Trace_Fn, void *);
static _Unwind_Ptr (*unwind_getip) (struct _Unwind_Context *);
static _Unwind_Ptr (*unwind_getcfa) (struct _Unwind_Context *);
static _Unwind_Ptr (*unwind_getgr) (struct _Unwind_Context *, int);
+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_getcfa = __libc_dlsym (handle, "_Unwind_GetCFA");
- unwind_getgr = __libc_dlsym (handle, "_Unwind_GetGR");
+ unwind_backtrace = __libc_dlsym (libgcc_handle, "_Unwind_Backtrace");
+ unwind_getip = __libc_dlsym (libgcc_handle, "_Unwind_GetIP");
+ unwind_getcfa = __libc_dlsym (libgcc_handle, "_Unwind_GetCFA");
+ unwind_getgr = __libc_dlsym (libgcc_handle, "_Unwind_GetGR");
if (unwind_getip == NULL || unwind_getgr == NULL || unwind_getcfa == NULL)
- unwind_backtrace = NULL;
+ {
+ unwind_backtrace = NULL;
+ __libc_dlclose (libgcc_handle);
+ libgcc_handle = NULL;
+ }
}
#else
# define unwind_backtrace _Unwind_Backtrace
@@ -142,3 +147,17 @@ __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