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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/106735] New: tens of thousands of errors in C++
 library
Date: Wed, 24 Aug 2022 21:14:49 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: libstdc++
X-Bugzilla-Version: 13.0
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X-Bugzilla-Who: seurer at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106735

            Bug ID: 106735
           Summary: tens of thousands of errors in C++ library
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

I am seeing over 42,000 new errors after some recent trunk commit in the C++
library or usage of the C++ library.

A couple of examples (they are all or mostly like these):

FAIL: g++.dg/gomp/pr88182.C  -std=3Dgnu++98 (test for excess errors)
Excess errors:
/home/seurer/binutils/install/bin/ld:
/home/seurer/gcc/git/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libstd=
c++-v3/src/.libs/libstdc++.so:
undefined reference to `std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > std::operator+<char,
std::char_traits<char>, std::allocator<char> >(std::__cxx11::basic_string<c=
har,
std::char_traits<char>, std::allocator<char> > const&, char const*)'


FAIL: g++.dg/ext/tmplattr4.C  -std=3Dc++98 (test for excess errors)
Excess errors:
/home/seurer/binutils/install/bin/ld:
/home/seurer/gcc/git/build/gcc-test/powerpc64le-unknown-linux-gnu/./libstdc=
++-v3/src/.libs/libstdc++.so:
undefined reference to `std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > std::operator+<char,
std::char_traits<char>, std::allocator<char> >(std::__cxx11::basic_string<c=
har,
std::char_traits<char>, std::allocator<char> > const&, char const*)'


I have a bisect running and will report if it finds a culprit.=