From: Alexandre Oliva <aoliva@redhat.com>
Date: Thu, 5 Jan 2017 01:46:52 +0000 (+0000)
Subject: [bootstrap-O3] add a default initializer to avoid a warning at -O3
X-Git-Tag: basepoints/gcc-8~2013
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a954833dfb8100b290d68894b8f573984ecbe5c9;p=thirdparty%2Fgcc.git

[bootstrap-O3] add a default initializer to avoid a warning at -O3

Building with the bootstrap-O3 configuration option fails to compile
input.c due to an AFAICT false-positive warning about an uninitialized
use of a variable.

This patch adds a default initializer to silence it.

for  gcc/ChangeLog

	* input.c (assert_char_at_range): Default-initialize
	actual_range.

From-SVN: r244091
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 88fb3b4b2b53..ce11bc4ca0b2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-01-04  Alexandre Oliva <aoliva@redhat.com>
+
+	* input.c (assert_char_at_range): Default-initialize
+	actual_range.
+
 2017-01-04  Alexandre Oliva <aoliva@redhat.com>
 
 	* df-scan.c (df_ref_create_structure): Make regno unsigned,
diff --git a/gcc/input.c b/gcc/input.c
index 0294034114bd..195f72e06197 100644
--- a/gcc/input.c
+++ b/gcc/input.c
@@ -2173,7 +2173,7 @@ assert_char_at_range (const location &loc,
   cpp_reader *pfile = test.m_parser;
   string_concat_db *concats = &test.m_concats;
 
-  source_range actual_range;
+  source_range actual_range = source_range();
   const char *err
     = get_source_range_for_char (pfile, concats, strloc, type, idx,
 				 &actual_range);