From: Marek Polacek <polacek@redhat.com>
Date: Wed, 27 Apr 2022 22:17:54 +0000 (-0400)
Subject: c++: global-namespace-qualified var after class def [PR90107]
X-Git-Tag: upstream/12.2.0~393
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=851031b2fcd5210b96769c440db10130478d273c;p=platform%2Fupstream%2Fgcc.git

c++: global-namespace-qualified var after class def [PR90107]

Here we wrongly reject the definition of "::N::a"

  struct A;
  namespace N { extern A a; }
  struct A {} ::N::a;

because our code to diagnose a missing ; after a class definition doesn't
realize that :: can follow a class definition.

	PR c++/90107

gcc/cp/ChangeLog:

	* parser.cc (cp_parser_class_specifier_1): Accept :: after a class
	definition.

gcc/testsuite/ChangeLog:

	* g++.dg/parse/qualified6.C: New test.
---

diff --git a/gcc/cp/parser.cc b/gcc/cp/parser.cc
index 169e6a6..2235da1 100644
--- a/gcc/cp/parser.cc
+++ b/gcc/cp/parser.cc
@@ -25933,6 +25933,7 @@ cp_parser_class_specifier_1 (cp_parser* parser)
       case CPP_OPEN_PAREN:
       case CPP_CLOSE_PAREN:
       case CPP_COMMA:
+      case CPP_SCOPE:
         want_semicolon = false;
         break;
 
diff --git a/gcc/testsuite/g++.dg/parse/qualified6.C b/gcc/testsuite/g++.dg/parse/qualified6.C
new file mode 100644
index 0000000..68b51f7
--- /dev/null
+++ b/gcc/testsuite/g++.dg/parse/qualified6.C
@@ -0,0 +1,10 @@
+// PR c++/90107
+// { dg-do compile }
+
+struct A;
+namespace N { extern A a; }
+struct A {} ::N::a;
+
+struct A1;
+struct B { static A1 a1; };
+struct A1 {} ::B::a1;