[C++ PATCH] Disable -Wuninitialized warnings on NSDMI initialized fields (PR c++/53594)

[Jakub Jelinek]

Hi!

As stated in the PR, the -Wuninitialized warnings are bogus if
fields have NSDMI, as they are actually initialized then.

Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
What about 4.7.2?

2012-06-11  Jakub Jelinek  <ja...@redhat.com>

        PR c++/53594
        * class.c (check_bases_and_members): Avoid -Wuninitialized
        diagnostics for non-static const members or references if they
        use NSDMI.

        * g++.dg/cpp0x/nsdmi7.C: New test.

--- gcc/cp/class.c.jj   2012-06-07 08:27:35.000000000 +0200
+++ gcc/cp/class.c      2012-06-11 10:36:39.050739846 +0200
@@ -5122,7 +5122,8 @@ check_bases_and_members (tree t)
        {
          tree type;
 
-         if (TREE_CODE (field) != FIELD_DECL)
+         if (TREE_CODE (field) != FIELD_DECL
+             || DECL_INITIAL (field) != NULL_TREE)
            continue;
 
          type = TREE_TYPE (field);
--- gcc/testsuite/g++.dg/cpp0x/nsdmi7.C.jj      2012-06-11 10:44:35.723568438 
+0200
+++ gcc/testsuite/g++.dg/cpp0x/nsdmi7.C 2012-06-11 10:50:16.000000000 +0200
@@ -0,0 +1,17 @@
+// PR c++/53594
+// { dg-do compile }
+// { dg-options "-std=c++11 -Wuninitialized" }
+
+struct A
+{
+  const int a = 6;     // { dg-bogus "non-static const member" }
+  static int b;
+  int &c = b;          // { dg-bogus "non-static reference" }
+};
+
+struct B
+{
+  const int d;         // { dg-warning "non-static const member" }
+  int &e;              // { dg-warning "non-static reference" }
+  int f = 7;
+};

        Jakub