(mark_addressable, case COMPONENT_REF): Give error if taking address

of a bit field.

From-SVN: r10858

diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c
index d76e724..d8e4ff1 100644 (file)
--- a/gcc/c-typeck.c
+++ b/gcc/c-typeck.c
@@ -3292,8 +3292,15 @@ mark_addressable (exp)
   while (1)
     switch (TREE_CODE (x))
       {
-      case ADDR_EXPR:
       case COMPONENT_REF:
+       if (DECL_C_BIT_FIELD (TREE_OPERAND (x, 1)))
+         error ("cannot take address of bitfield `%s'",
+                IDENTIFIER_POINTER (DECL_NAME (TREE_OPERAND (x, 1))));
+       return 0;
+
+       /* ... fall through ... */
+
+      case ADDR_EXPR:
       case ARRAY_REF:
       case REALPART_EXPR:
       case IMAGPART_EXPR: