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re PR c++/90842 (ICE in poplevel, at cp/decl.c:585) 

PR c++/90842
	* parser.c (cp_parser_decl_specifier_seq): For concept or typedef
	break early if CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR.
	For type specifiers, set CP_PARSER_FLAGS_NO_TYPE_DEFINITIONS
	if CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR is set.

	* g++.dg/cpp1y/lambda-generic-90842.C: New test.

Co-Authored-By: Jason Merrill <jason@redhat.com>

From-SVN: r278538
This commit is contained in:
Jakub Jelinek 2019-11-21 02:00:43 +01:00 committed by Jakub Jelinek
parent f0a2c2c89c
commit b69d4d4542
4 changed files with 34 additions and 0 deletions
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9
gcc/cp/ChangeLog
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@ -1,3 +1,12 @@
2019-11-21 Jakub Jelinek <jakub@redhat.com>
Jason Merrill <jason@redhat.com>
PR c++/90842
* parser.c (cp_parser_decl_specifier_seq): For concept or typedef
break early if CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR.
For type specifiers, set CP_PARSER_FLAGS_NO_TYPE_DEFINITIONS
if CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR is set.
2019-11-20 Paolo Carlini <paolo.carlini@oracle.com>
* typeck2.c (build_x_arrow): Early return if decay_conversion

10
gcc/cp/parser.c
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@ -14097,6 +14097,9 @@ cp_parser_decl_specifier_seq (cp_parser* parser,
ds = ds_concept;
cp_lexer_consume_token (parser->lexer);
if (flags & CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR)
break;
/* Warn for concept as a decl-specifier. We'll rewrite these as
concept declarations later. */
if (!flag_concepts_ts)
@ -14139,6 +14142,10 @@ cp_parser_decl_specifier_seq (cp_parser* parser,
ds = ds_typedef;
/* Consume the token. */
cp_lexer_consume_token (parser->lexer);
if (flags & CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR)
break;
/* A constructor declarator cannot appear in a typedef. */
constructor_possible_p = false;
/* The "typedef" keyword can only occur in a declaration; we
@ -14235,6 +14242,9 @@ cp_parser_decl_specifier_seq (cp_parser* parser,
bool is_cv_qualifier;
tree type_spec;
if (flags & CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR)
flags |= CP_PARSER_FLAGS_NO_TYPE_DEFINITIONS;
type_spec
= cp_parser_type_specifier (parser, flags,
decl_specs,

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2019-11-21 Jakub Jelinek <jakub@redhat.com>
PR c++/90842
* g++.dg/cpp1y/lambda-generic-90842.C: New test.
2019-11-20 Marek Polacek <polacek@redhat.com>
PR c++/92443

10
gcc/testsuite/g++.dg/cpp1y/lambda-generic-90842.C Normal file
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@ -0,0 +1,10 @@
// PR c++/90842
// { dg-do compile { target c++14 } }
auto a = [](auto x) struct C { void foo (); } {}; // { dg-error "expected" }
// { dg-error "type-specifier invalid in lambda" "" { target *-*-* } .-1 }
auto b = [](auto x) mutable typedef {}; // { dg-error "'typedef' invalid in lambda" }
#if __cpp_concepts >= 201907L
auto c = [](auto x) constexpr concept {}; // { dg-error "'concept' invalid in lambda" "" { target c++2a } }
#endif
auto d = [](auto x) mutable friend {}; // { dg-error "'friend' invalid in lambda" }