From b20ade36e40a97f2836926dd95cbb5a7d087f58f Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <iant@google.com>
Date: Tue, 20 Nov 2012 17:28:05 +0000
Subject: [PATCH] * dwarf.c (read_attribute): Always clear val.

From-SVN: r193670
---
 libbacktrace/ChangeLog | 4 ++++
 libbacktrace/dwarf.c   | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/libbacktrace/ChangeLog b/libbacktrace/ChangeLog
index fc5871ad30de..7d2cfda88b9c 100644
--- a/libbacktrace/ChangeLog
+++ b/libbacktrace/ChangeLog
@@ -1,3 +1,7 @@
+2012-11-20  Ian Lance Taylor  <iant@google.com>
+
+	* dwarf.c (read_attribute): Always clear val.
+
 2012-11-13  Ian Lance Taylor  <iant@google.com>
 
 	PR other/55312
diff --git a/libbacktrace/dwarf.c b/libbacktrace/dwarf.c
index b198dea38dc8..bd7419b9c9af 100644
--- a/libbacktrace/dwarf.c
+++ b/libbacktrace/dwarf.c
@@ -654,6 +654,12 @@ read_attribute (enum dwarf_form form, struct dwarf_buf *buf,
 		const unsigned char *dwarf_str, size_t dwarf_str_size,
 		struct attr_val *val)
 {
+  /* Avoid warnings about val.u.FIELD may be used uninitialized if
+     this function is inlined.  The warnings aren't valid but can
+     occur because the different fields are set and used
+     conditionally.  */
+  memset (val, 0, sizeof *val);
+
   switch (form)
     {
     case DW_FORM_addr: