From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id CE452389602D; Sat, 5 Dec 2020 00:18:24 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CE452389602D From: "ndkrempel at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/98150] New: Segfault from statement expression in lambda noexcept Date: Sat, 05 Dec 2020 00:18:24 +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: 10.2.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: ndkrempel at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: 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 target_milestone Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Dec 2020 00:18:24 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98150 Bug ID: 98150 Summary: Segfault from statement expression in lambda noexcept Product: gcc Version: 10.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: ndkrempel at gmail dot com Target Milestone: --- The following code produces a segfault in gcc versions 8.1 up to 10.2 and t= runk (using -std=3Dc++2a or -std=3Dc++20): int main() { []()noexcept(noexcept(({constexpr int&&x=3D1;}))); } Here's the stack trace from trunk (https://gcc.godbolt.org/z/nqoojv): : In function 'int main()': :2:44: internal compiler error: Segmentation fault 2 | []()noexcept(noexcept(({constexpr int&&x=3D1;}))); | ^ 0x1c354c9 internal_error(char const*, ...) ???:0 0x80119c mangle_ref_init_variable(tree_node*) ???:0 0x6b4419 make_temporary_var_for_ref_to_temp(tree_node*, tree_node*) ???:0 0x9892ae store_init_value(tree_node*, tree_node*, vec**, int) ???:0 0x7974d0 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int) ???:0 0x87f79c c_parse_file() ???:0 0x9f9512 c_common_parse_file() ???:0 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See for instructions. ASM generation compiler returned: 1 : In function 'int main()': :2:44: internal compiler error: Segmentation fault 2 | []()noexcept(noexcept(({constexpr int&&x=3D1;}))); | ^ 0x1c354c9 internal_error(char const*, ...) ???:0 0x80119c mangle_ref_init_variable(tree_node*) ???:0 0x6b4419 make_temporary_var_for_ref_to_temp(tree_node*, tree_node*) ???:0 0x9892ae store_init_value(tree_node*, tree_node*, vec**, int) ???:0 0x7974d0 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int) ???:0 0x87f79c c_parse_file() ???:0 0x9f9512 c_common_parse_file() ???:0 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See for instructions. Execution build compiler returned: 1=