re PR middle-end/42834 (memcpy folding overeager)

[thirdparty/gcc.git] / gcc / cfgexpand.c

diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c
index 0d8026e75a15121344e4573f672c433145c76c9d..a76aeb23b3b24d4657613e2ee4deb7943bb14632 100644 (file)
--- a/gcc/cfgexpand.c
+++ b/gcc/cfgexpand.c
@@ -2438,6 +2438,11 @@ expand_debug_expr (tree exp)
        return op0;
       }
 
+    case MEM_REF:
+      /* ??? FIXME.  */
+      if (!integer_zerop (TREE_OPERAND (exp, 1)))
+       return NULL;
+      /* Fallthru.  */
     case INDIRECT_REF:
     case ALIGN_INDIRECT_REF:
     case MISALIGNED_INDIRECT_REF: