PR c/23113

[pf3gnuchains/gcc-fork.git] / gcc / c-typeck.c

diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c
index c049895..9078730 100644 (file)
--- a/gcc/c-typeck.c
+++ b/gcc/c-typeck.c
@@ -7315,7 +7315,13 @@ c_finish_stmt_expr (tree body)
   if (last == error_mark_node
       || (last == BIND_EXPR_BODY (body)
          && BIND_EXPR_VARS (body) == NULL))
-    return last;
+    {
+      /* Do not warn if the return value of a statement expression is
+        unused.  */
+      if (EXPR_P (last))
+       TREE_NO_WARNING (last) = 1;
+      return last;
+    }
 
   /* Extract the type of said expression.  */
   type = TREE_TYPE (last);