PR c/35652

       * builtins.c (c_strlen): Suppressed multiple warnings that can occur
       with propagated string constants.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@134714 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 1 deletions

diff --git a/gcc/builtins.c b/gcc/builtins.c
index 765294b1be3..321032dace0 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -447,7 +447,12 @@ c_strlen (tree src, int only_value)
      runtime.  */
   if (offset < 0 || offset > max)
     {
-      warning (0, "offset outside bounds of constant string");
+     /* Suppress multiple warnings for propagated constant strings.  */
+      if (! TREE_NO_WARNING (src))
+        {
+          warning (0, "offset outside bounds of constant string");
+          TREE_NO_WARNING (src) = 1;
+        }
       return NULL_TREE;
     }