[gcc r12-1822] c++: Failure to delay noexcept parsing with ptr-operator [PR100752]

[gcc r12-1822] c++: Failure to delay noexcept parsing with ptr-operator [PR100752]

[Marek Polacek]

https://gcc.gnu.org/g:f9c80eb12c58126a94ad869380af5b88b752c06f

commit r12-1822-gf9c80eb12c58126a94ad869380af5b88b752c06f
Author: Marek Polacek <polacek@redhat.com>
Date:   Tue Jun 8 17:44:13 2021 -0400

    c++: Failure to delay noexcept parsing with ptr-operator [PR100752]
    
    We weren't passing 'flags' to the recursive call to cp_parser_declarator
    in the ptr-operator case and as an effect, delayed parsing of noexcept
    didn't work as advertised.  The following change passes more than just
    CP_PARSER_FLAGS_DELAY_NOEXCEPT but that doesn't seem to break anything.
    
    I'm now also passing member_p and static_p, as a consequence, two tests
    needed small tweaks.
    
            PR c++/100752
    
    gcc/cp/ChangeLog:
    
            * parser.c (cp_parser_declarator): Pass flags down to
            cp_parser_declarator.  Also pass static_p/member_p.
    
    gcc/testsuite/ChangeLog:
    
            * g++.dg/cpp0x/noexcept69.C: New test.
            * g++.dg/parse/saved1.C: Adjust dg-error.
            * g++.dg/template/crash50.C: Likewise.

Diff:
---
 gcc/cp/parser.c                         |  6 ++----
 gcc/testsuite/g++.dg/cpp0x/noexcept69.C | 12 ++++++++++++
 gcc/testsuite/g++.dg/parse/saved1.C     |  4 ++--
 gcc/testsuite/g++.dg/template/crash50.C |  2 +-
 4 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 096580e7e50..02daa7a6f6a 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -22170,12 +22170,10 @@ cp_parser_declarator (cp_parser* parser,
 	cp_parser_parse_tentatively (parser);
 
       /* Parse the dependent declarator.  */
-      declarator = cp_parser_declarator (parser, dcl_kind,
-					 CP_PARSER_FLAGS_NONE,
+      declarator = cp_parser_declarator (parser, dcl_kind, flags,
 					 /*ctor_dtor_or_conv_p=*/NULL,
 					 /*parenthesized_p=*/NULL,
-					 /*member_p=*/false,
-					 friend_p, /*static_p=*/false);
+					 member_p, friend_p, static_p);
 
       /* If we are parsing an abstract-declarator, we must handle the
 	 case where the dependent declarator is absent.  */
diff --git a/gcc/testsuite/g++.dg/cpp0x/noexcept69.C b/gcc/testsuite/g++.dg/cpp0x/noexcept69.C
new file mode 100644
index 00000000000..9b87ba0cafb
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/noexcept69.C
@@ -0,0 +1,12 @@
+// PR c++/100752
+// { dg-do compile { target c++11 } }
+
+struct S {
+  void f() noexcept {}
+  S &g() noexcept(noexcept(f())) { f(); return *this; }
+};
+
+struct X {
+  int& f() noexcept(noexcept(i));
+  int i;
+};
diff --git a/gcc/testsuite/g++.dg/parse/saved1.C b/gcc/testsuite/g++.dg/parse/saved1.C
index 979a05676d2..1deaa93f516 100644
--- a/gcc/testsuite/g++.dg/parse/saved1.C
+++ b/gcc/testsuite/g++.dg/parse/saved1.C
@@ -1,7 +1,7 @@
 // Test that the parser doesn't go into an infinite loop from ignoring the
 // PRE_PARSED_FUNCTION_DECL token.
 
-class C { static void* operator new(size_t); }; // { dg-error "24:declaration of .operator new. as non-function" }
-// { dg-error "expected|ISO C\\+\\+ forbids" "" { target *-*-* } .-1 }
+class C { static void* operator new(size_t); }; // { dg-error "37:.size_t. has not been declared" }
+// { dg-error ".operator new. takes type .size_t." "" { target *-*-* } .-1 }
 void* C::operator new(size_t) { return 0; } // { dg-error "" }
 class D { D(int i): integer(i){}}; // { dg-error "" }
diff --git a/gcc/testsuite/g++.dg/template/crash50.C b/gcc/testsuite/g++.dg/template/crash50.C
index 286685ac838..4b846cdabc8 100644
--- a/gcc/testsuite/g++.dg/template/crash50.C
+++ b/gcc/testsuite/g++.dg/template/crash50.C
@@ -3,5 +3,5 @@
 
 struct A
 {
-  template<int> void* foo(; // { dg-error "primary-expression|initialization|static|template" }
+  template<int> void* foo(; // { dg-error "expected|initialization|static|template" }
 };