From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-431039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 25847 invoked by alias); 3 Oct 2013 20:49:22 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 25448 invoked by uid 48); 3 Oct 2013 20:49:18 -0000
From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/58607] New: [4.9 Regression] ICE with undeclared variable in constexpr
Date: Thu, 03 Oct 2013 20:49:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 4.9.0
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: reichelt at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter
Message-ID: <bug-58607-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2013-10/txt/msg00183.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58607

            Bug ID: 58607
           Summary: [4.9 Regression] ICE with undeclared variable in
                    constexpr
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: reichelt at gcc dot gnu.org

The following invalid code snippet (compiled with "-std=c++11") triggers an ICE
on trunk (GCC 4.9.0 20130920):

=========================
struct A
{
  constexpr A() { i; }
};
=========================

bug.cc: In constructor 'constexpr A::A()':
bug.cc:3:19: error: 'i' was not declared in this scope
   constexpr A() { i; }
                   ^
bug.cc:3:22: internal compiler error: in build_data_member_initialization, at
cp/semantics.c:6032
   constexpr A() { i; }
                      ^
0x6c177e build_data_member_initialization
        ../../gcc/gcc/cp/semantics.c:6032
0x6c1cc9 build_constexpr_constructor_member_initializers
        ../../gcc/gcc/cp/semantics.c:6209
0x6c1cc9 massage_constexpr_body
        ../../gcc/gcc/cp/semantics.c:6290
0x6c94f3 register_constexpr_fundef(tree_node*, tree_node*)
        ../../gcc/gcc/cp/semantics.c:6394
0x568058 maybe_save_function_definition
        ../../gcc/gcc/cp/decl.c:13771
0x568058 finish_function(int)
        ../../gcc/gcc/cp/decl.c:13892
0x65090d cp_parser_function_definition_after_declarator
        ../../gcc/gcc/cp/parser.c:22346
0x635fbc cp_parser_late_parsing_for_member
        ../../gcc/gcc/cp/parser.c:22995
0x635fbc cp_parser_class_specifier_1
        ../../gcc/gcc/cp/parser.c:19078
0x638180 cp_parser_class_specifier
        ../../gcc/gcc/cp/parser.c:19102
0x638180 cp_parser_type_specifier
        ../../gcc/gcc/cp/parser.c:14081
0x64d679 cp_parser_decl_specifier_seq
        ../../gcc/gcc/cp/parser.c:11328
0x651719 cp_parser_simple_declaration
        ../../gcc/gcc/cp/parser.c:10918
0x653740 cp_parser_block_declaration
        ../../gcc/gcc/cp/parser.c:10867
0x65c76e cp_parser_declaration
        ../../gcc/gcc/cp/parser.c:10764
0x65b4da cp_parser_declaration_seq_opt
        ../../gcc/gcc/cp/parser.c:10650
0x65cda6 cp_parser_translation_unit
        ../../gcc/gcc/cp/parser.c:3939
0x65cda6 c_parse_file()
        ../../gcc/gcc/cp/parser.c:28900
0x7707e3 c_common_parse_file()
        ../../gcc/gcc/c-family/c-opts.c:1046
Please submit a full bug report, [etc.]