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Fix PR c++/42217
[pf3gnuchains/gcc-fork.git] / gcc / cp / class.c
index 1dcc238..ca75bc1 100644 (file)
@@ -4254,7 +4254,12 @@ remove_zero_width_bit_fields (tree t)
     {
       if (TREE_CODE (*fieldsp) == FIELD_DECL
          && DECL_C_BIT_FIELD (*fieldsp)
-         && DECL_INITIAL (*fieldsp))
+          /* We should not be confused by the fact that grokbitfield
+            temporarily sets the width of the bit field into
+            DECL_INITIAL (*fieldsp).
+            check_bitfield_decl eventually sets DECL_SIZE (*fieldsp)
+            to that width.  */
+         && integer_zerop (DECL_SIZE (*fieldsp)))
        *fieldsp = TREE_CHAIN (*fieldsp);
       else
        fieldsp = &TREE_CHAIN (*fieldsp);