[gcc r14-8967] c++: adjust the extra ; warning [PR113760]

[Marek Polacek <mpolacek@gcc.gnu.org>]

https://gcc.gnu.org/g:6fec511f2d23cc70ab29d1ba79c2415ab51bcb60

commit r14-8967-g6fec511f2d23cc70ab29d1ba79c2415ab51bcb60
Author: Marek Polacek <polacek@redhat.com>
Date:   Tue Feb 13 16:21:32 2024 -0500

    c++: adjust the extra ; warning [PR113760]
    
    A minimal fix to quash an extra ; warning.  I have a more complete
    patch for GCC 15.
    
            DR 1693
            PR c++/113760
    
    gcc/cp/ChangeLog:
    
            * parser.cc (cp_parser_member_declaration): Only pedwarn about an extra
            semicolon in C++98.
    
    gcc/testsuite/ChangeLog:
    
            * g++.dg/semicolon-fixits.C: Run in C++98 only.
            * g++.dg/warn/pedantic2.C: Adjust dg-warning.
            * g++.old-deja/g++.jason/parse11.C: Adjust dg-error.
            * g++.dg/DRs/dr1693-1.C: New test.
            * g++.dg/DRs/dr1693-2.C: New test.

Diff:
---
 gcc/cp/parser.cc                               | 2 +-
 gcc/testsuite/g++.dg/DRs/dr1693-1.C            | 9 +++++++++
 gcc/testsuite/g++.dg/DRs/dr1693-2.C            | 9 +++++++++
 gcc/testsuite/g++.dg/semicolon-fixits.C        | 1 +
 gcc/testsuite/g++.dg/warn/pedantic2.C          | 4 ++--
 gcc/testsuite/g++.old-deja/g++.jason/parse11.C | 4 ++--
 6 files changed, 24 insertions(+), 5 deletions(-)

diff --git a/gcc/cp/parser.cc b/gcc/cp/parser.cc
index 68ab74d70b9c..9d0914435fb1 100644
--- a/gcc/cp/parser.cc
+++ b/gcc/cp/parser.cc
@@ -27999,7 +27999,7 @@ cp_parser_member_declaration (cp_parser* parser)
       if (!decl_specifiers.any_specifiers_p)
 	{
 	  cp_token *token = cp_lexer_peek_token (parser->lexer);
-	  if (!in_system_header_at (token->location))
+	  if (cxx_dialect < cxx11 && !in_system_header_at (token->location))
 	    {
 	      gcc_rich_location richloc (token->location);
 	      richloc.add_fixit_remove ();
diff --git a/gcc/testsuite/g++.dg/DRs/dr1693-1.C b/gcc/testsuite/g++.dg/DRs/dr1693-1.C
new file mode 100644
index 000000000000..ed27026109c1
--- /dev/null
+++ b/gcc/testsuite/g++.dg/DRs/dr1693-1.C
@@ -0,0 +1,9 @@
+// DR 1693, Superfluous semicolons in class definitions
+// PR c++/113760
+// { dg-do compile }
+// { dg-options "" }
+
+struct S {
+  int a;
+  ;
+};
diff --git a/gcc/testsuite/g++.dg/DRs/dr1693-2.C b/gcc/testsuite/g++.dg/DRs/dr1693-2.C
new file mode 100644
index 000000000000..c52259d4602a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/DRs/dr1693-2.C
@@ -0,0 +1,9 @@
+// DR 1693, Superfluous semicolons in class definitions
+// PR c++/113760
+// { dg-do compile }
+// { dg-options "-pedantic-errors" }
+
+struct S {
+  int a;
+  ;	    // { dg-error "extra" "" { target c++98_only } }
+};
diff --git a/gcc/testsuite/g++.dg/semicolon-fixits.C b/gcc/testsuite/g++.dg/semicolon-fixits.C
index a9cc783b1725..198e306c950d 100644
--- a/gcc/testsuite/g++.dg/semicolon-fixits.C
+++ b/gcc/testsuite/g++.dg/semicolon-fixits.C
@@ -1,3 +1,4 @@
+// { dg-do compile { target c++98_only } }
 /* { dg-options "-fdiagnostics-show-caret -Wpedantic" } */
 
 /* Struct with extra semicolon.  */
diff --git a/gcc/testsuite/g++.dg/warn/pedantic2.C b/gcc/testsuite/g++.dg/warn/pedantic2.C
index 6c834162c1b6..37d77daaef3f 100644
--- a/gcc/testsuite/g++.dg/warn/pedantic2.C
+++ b/gcc/testsuite/g++.dg/warn/pedantic2.C
@@ -5,6 +5,6 @@ class foo
   foo() {};
   void bar() {};
 
-  foo(int) {};;  // { dg-warning "extra" }
-  void bar(int) {};;  // { dg-warning "extra" }
+  foo(int) {};;  // { dg-warning "extra" "" { target c++98_only } }
+  void bar(int) {};;  // { dg-warning "extra" "" { target c++98_only } }
 };
diff --git a/gcc/testsuite/g++.old-deja/g++.jason/parse11.C b/gcc/testsuite/g++.old-deja/g++.jason/parse11.C
index 40864c108ba0..157a9c46287d 100644
--- a/gcc/testsuite/g++.old-deja/g++.jason/parse11.C
+++ b/gcc/testsuite/g++.old-deja/g++.jason/parse11.C
@@ -3,7 +3,7 @@
 
 class aClass 
 { 
-  ; // { dg-error "" } missing declaration
+  ; // { dg-error "" "" { target c++98_only } } missing declaration
 private: 
-  ; // { dg-error "" } missing declaration
+  ; // { dg-error "" "" { target c++98_only } } missing declaration
 };