From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id BF32A3887CFA; Mon, 12 Dec 2022 12:06:14 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org BF32A3887CFA DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1670846774; bh=auZogy9q0OUpfqqi2chxB0BkzWywalJgH/Z1sRTQZJk=; h=From:To:Subject:Date:In-Reply-To:References:From; b=WY2xooeTWJG4SZIZJYhPOqjcIvN9Hwk84f+OSysy655ZfDQ9hePUtabRZ9Riizv4B /ruPTM8H7ebfmpYieP315k5GZqCF0ce0VWIOLUIt8Pa24gbFKrf6EhR+PFXyOb+tsC m34lRBA/xXDrmqOlfDxoQfx+5K4zrxo+eaGIf7qw= From: "slyfox at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/108047] ice: unexpected expression of kind implicit_conv_expr Date: Mon, 12 Dec 2022 12:06:14 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Version: 13.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: slyfox at gcc dot gnu.org 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: cc Message-ID: In-Reply-To: References: 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108047 Sergei Trofimovich changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |slyfox at gcc dot gnu.org --- Comment #4 from Sergei Trofimovich --- Noticed the same build failure on this week's gcc on apache-arrow-cpp-9.0.0. Extracted small example: namespace std { template class initializer_list; struct Trans_NS___cxx11_basic_string { Trans_NS___cxx11_basic_string(const char *); }; struct vector { vector(initializer_list); }; } // namespace std void key_value_metadata(std::vector, std::vector); template void TestWriteDifferentMetadata() { key_value_metadata({}, {""}); } Not sure if it's valid, but gcc-12 still accepts it. Can re-reduce against clang if needed. $ ./gcc-git/bin/gcc -c bug.cc.cc bug.cc.cc: In function 'void TestWriteDifferentMetadata()': bug.cc.cc:12:21: internal compiler error: unexpected expression '(std::Trans_NS___cxx11_basic_string)""' of kind implicit_conv_expr 12 | key_value_metadata({}, {""}); | ~~~~~~~~~~~~~~~~~~^~~~~~~~~~ 0x219cf54 diagnostic_impl(rich_location*, diagnostic_metadata const*, int, = char const*, __va_list_tag (*) [1], diagnostic_t) ???:0 0x219dba6 internal_error(char const*, ...) ???:0 0x9d4fee cxx_eval_constant_expression(constexpr_ctx const*, tree_node*, value_cat, bool*, bool*, tree_node**) ???:0=