From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id E74713858D33; Sat, 9 Sep 2023 19:58:02 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E74713858D33 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1694289482; bh=gCF5W1Rp8o6Pkq4ROx4kQc+tDh8mk4yfDXIcwfN3X08=; h=From:To:Subject:Date:In-Reply-To:References:From; b=bWYqFN5Ow7vOm4XhDkWV/iUZfw2yX6pAV4MpJbqYt2rGAxSHHaVChJtKxckiwiHga aBF57EXTgScKBPh5fdRsDogDyEh0rw4YczGaSAzJ5Ztp6zh6VtRiN/+nQTaF71ndkl uLl4TrX0TnUWaD3+as6NZJEoxPv2vJ11w4pXypHQ= From: "redi at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/111300] [14 Regression] g++.dg/modules/xtreme-header_b.C Date: Sat, 09 Sep 2023 19:58:02 +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: 14.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: redi at gcc dot gnu.org X-Bugzilla-Status: NEW 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: 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=3D111300 --- Comment #3 from Jonathan Wakely --- Possibly relevant, compiling anything including with -Wsystem-headers -Wabi gives these warnings: /home/jwakely/gcc/13/include/c++/13.2.1/stacktrace: At global scope: /home/jwakely/gcc/13/include/c++/13.2.1/stacktrace:201:24: warning: the man= gled name of 'constexpr std::stacktrace_entry::_M_get_info(std::string*, std::string*, int*) const::::operator void (*)(void*, std::stacktrace_entry::uintptr_t, const char*, std::stacktrace_entry::uintptr_t, std::stacktrace_entry::uintptr_t)() const' changed between '-fabi-version=3D10' ('_ZZNKSt16stacktrace_entry11_M_get_infoEPNSt7__cxx1112basic_stringIcSt11ch= ar_traitsIcESaIcEEES6_PiENKUlPvmPKcmmE0_cvPFvS8_mSA_mmEEv') and '-fabi-version=3D18' ('_ZZNKSt16stacktrace_entry11_M_get_infoEPNSt7__cxx1112basic_stringIcSt11ch= ar_traitsIcESaIcEEES6_PiENKUlPvmPKcmmE_cvPFvS8_mSA_mmEEv') [-Wabi] 201 | auto __cb2 =3D [](void* __data, uintptr_t, const char* __symname, | ^ /home/jwakely/gcc/13/include/c++/13.2.1/stacktrace:201:24: warning: the man= gled name of 'static constexpr void std::stacktrace_entry::_M_get_info(std::stri= ng*, std::string*, int*) const::::_FUN(void*, std::stacktrace_entry::uintptr_t, const char*, std::stacktrace_entry::uintptr_t, std::stacktrace_entry::uintptr_t)' changed between '-fabi-version=3D10' ('_ZZNKSt16stacktrace_entry11_M_get_infoEPNSt7__cxx1112basic_stringIcSt11ch= ar_traitsIcESaIcEEES6_PiENUlPvmPKcmmE0_4_FUNES8_mSA_mm') and '-fabi-version=3D18' ('_ZZNKSt16stacktrace_entry11_M_get_infoEPNSt7__cxx1112basic_stringIcSt11ch= ar_traitsIcESaIcEEES6_PiENUlPvmPKcmmE_4_FUNES8_mSA_mm') [-Wabi] /home/jwakely/gcc/13/include/c++/13.2.1/stacktrace:201:24: warning: the man= gled name of 'std::stacktrace_entry::_M_get_info(std::string*, std::string*, int= *) const::' chang= ed between '-fabi-version=3D10' ('_ZZNKSt16stacktrace_entry11_M_get_infoEPNSt7__cxx1112basic_stringIcSt11ch= ar_traitsIcESaIcEEES6_PiENKUlPvmPKcmmE0_clES8_mSA_mm') and '-fabi-version=3D18' ('_ZZNKSt16stacktrace_entry11_M_get_infoEPNSt7__cxx1112basic_stringIcSt11ch= ar_traitsIcESaIcEEES6_PiENKUlPvmPKcmmE_clES8_mSA_mm') [-Wabi] e.g. g++ -x c++ /dev/null -include stacktrace -Wsystem-headers -std=3Dc++23 -Wabi=3D10 (either using GCC 13 built with --enable-libstdcxx-backtrace or using GCC t= runk before r14-3812-gb96b554592c5cb which moved the lambda out of the header in= to libstdc++exp.a) Those -Wabi warnings might be related to the "previous mangle" errors in the modules test.=