Hi,
we currently fail to parse this rather simple NSDMI usage (note that
wrapping the whole initializer in parentheses works around the problem
because cp_parser_cache_group handles the special case).
Simply detecting that we are parsing an ellipsis in an nsdmi and not
ending the main while loop in that case appears to work fine. If we
think we must be stricter we may consider keeping memory that the
previous token was a sizeof or... something else.
Tested x86_64-linux.
Thanks,
Paolo.
////////////////////////
/cp
2013-07-30 Paolo Carlini <paolo.carl...@oracle.com>
PR c++/57673
* parser.c (cp_parser_cache_defarg): In an NSDMI don't stop when
token->type == CPP_ELLIPSIS.
/testsuite
2013-07-30 Paolo Carlini <paolo.carl...@oracle.com>
PR c++/57673
* g++.dg/cpp0x/nsdmi-sizeof.C: New.
Index: cp/parser.c
===================================================================
--- cp/parser.c (revision 201343)
+++ cp/parser.c (working copy)
@@ -24145,7 +24145,9 @@ cp_parser_cache_defarg (cp_parser *parser, bool ns
case CPP_SEMICOLON:
case CPP_CLOSE_BRACE:
case CPP_CLOSE_SQUARE:
- if (depth == 0)
+ if (depth == 0
+ /* Handle correctly int n = sizeof ... ( p ); */
+ && !(nsdmi && token->type == CPP_ELLIPSIS))
done = true;
/* Update DEPTH, if necessary. */
else if (token->type == CPP_CLOSE_PAREN
Index: testsuite/g++.dg/cpp0x/nsdmi-sizeof.C
===================================================================
--- testsuite/g++.dg/cpp0x/nsdmi-sizeof.C (revision 0)
+++ testsuite/g++.dg/cpp0x/nsdmi-sizeof.C (working copy)
@@ -0,0 +1,7 @@
+// PR c++/57673
+// { dg-do compile { target c++11 } }
+
+template< int ... p >
+struct d {
+ int n = sizeof ... ( p );
+};
