Hi,
another simple issue, this one remained assigned to me for a while ;)
Anyway, we are not rejecting storage classes for anonymous unions in
class scope. Details: I'm handling anonymous structs in the same way,
for consistency (but in principle being an extension we could do
nothing); the error message I choose is quite terse (essentially the
beginning of the Standard wording about this issue); in terms of
testing, auto is of course special in C++11 (I could also, for example,
wrap the lines for the auto case in #ifndef __GXX_EXPERIMENTAL_CXX0X__)
Bootstrapped and tested x86_64-linux, as usual.
Thanks,
Paolo.
//////////////////////
/cp
2012-05-25 Paolo Carlini <paolo.carl...@oracle.com>
PR c++/32054
* parser.c (cp_parser_member_declaration): A storage class is not
allowed in a declaration of an anonymous union (and struct, as a
GCC extension) in a class scope.
/testsuite
2012-05-25 Paolo Carlini <paolo.carl...@oracle.com>
PR c++/32054
* g++.dg/other/anon-union3.C: New.
Index: testsuite/g++.dg/other/anon-union3.C
===================================================================
--- testsuite/g++.dg/other/anon-union3.C (revision 0)
+++ testsuite/g++.dg/other/anon-union3.C (revision 0)
@@ -0,0 +1,25 @@
+// PR c++/32054
+
+class C
+{
+ auto union // { dg-error "storage class" "" { target c++98 } }
+ {
+ int a;
+ }; // { dg-error "multiple|specified" "" { target c++11 } }
+ register union // { dg-error "storage class" }
+ {
+ int b;
+ };
+ static union // { dg-error "storage class" }
+ {
+ int c;
+ };
+ extern union // { dg-error "storage class" }
+ {
+ int d;
+ };
+ mutable union // { dg-error "storage class" }
+ {
+ int e;
+ };
+};
Index: cp/parser.c
===================================================================
--- cp/parser.c (revision 187868)
+++ cp/parser.c (working copy)
@@ -18910,6 +18910,11 @@ cp_parser_member_declaration (cp_parser* parser)
particular type), as opposed to a nested class. */
else if (ANON_AGGR_TYPE_P (type))
{
+ /* C++11 9.5/6. */
+ if (decl_specifiers.storage_class != sc_none)
+ error_at (decl_spec_token_start->location,
+ "a storage class is not allowed");
+
/* Remove constructors and such from TYPE, now that we
know it is an anonymous aggregate. */
fixup_anonymous_aggr (type);
