1 files changed, 10 insertions, 0 deletions
diff --git a/contrib/gcc/cp/semantics.c b/contrib/gcc/cp/semantics.c
index 9c37b36..ee16e75 100644
--- a/contrib/gcc/cp/semantics.c
+++ b/contrib/gcc/cp/semantics.c
@@ -587,6 +587,16 @@ maybe_convert_cond (tree cond)
 
   /* Do the conversion.  */
   cond = convert_from_reference (cond);
+
+  if (TREE_CODE (cond) == MODIFY_EXPR
+      && !TREE_NO_WARNING (cond)
+      && warn_parentheses)
+    {
+      warning (OPT_Wparentheses,
+	       "suggest parentheses around assignment used as truth value");
+      TREE_NO_WARNING (cond) = 1;
+    }
+
   return condition_conversion (cond);
 }