diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 71beff9ef77..2e651a6dc89 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2008-06-27  Laurynas Biveinis  <laurynas.biveinis@gmail.com>
+
+	PR c/34867
+	* c-lex.c (lex_charconst): Initialize unsignedp.
+
 2008-06-27  Olivier Hainque  <hainque@adacore.com>
 
 	* gimplify.c (gimplify_modify_expr_to_memset): Assert our
diff --git a/gcc/c-lex.c b/gcc/c-lex.c
index 73834ef413a..3c2c225c59f 100644
--- a/gcc/c-lex.c
+++ b/gcc/c-lex.c
@@ -977,7 +977,7 @@ lex_charconst (const cpp_token *token)
   cppchar_t result;
   tree type, value;
   unsigned int chars_seen;
-  int unsignedp;
+  int unsignedp = 0;
 
   result = cpp_interpret_charconst (parse_in, token,
 				    &chars_seen, &unsignedp);