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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/112541] New: FAIL:
 19_diagnostics/stacktrace/current.cc
Date: Wed, 15 Nov 2023 09:12:55 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: libstdc++
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: testsuite-fail
X-Bugzilla-Severity: normal
X-Bugzilla-Who: redi at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112541

            Bug ID: 112541
           Summary: FAIL: 19_diagnostics/stacktrace/current.cc
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: testsuite-fail
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: redi at gcc dot gnu.org
  Target Milestone: ---
            Target: armv8l-unknown-linux-gnueabihf

/home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/snapshots/gcc.git~master/lib=
stdc++-v3/testsuite/19_diagnostics/stacktrace/current.cc:52:
test_max_depth()::<lambda()>::<lambda()>::<lambda()>::<lambda()>::<lambda()=
>::<lambda()>::<lambda()>::<lambda()>:
Assertion '! t.empty()' failed.
timeout: the monitored command dumped core
FAIL: 19_diagnostics/stacktrace/current.cc  -std=3Dgnu++23 execution test


Also:
terminate called after throwing an instance of 'std::out_of_range'
  what():  basic_stack_trace::at: bad frame number
timeout: the monitored command dumped core
FAIL: 19_diagnostics/stacktrace/entry.cc  -std=3Dgnu++23 execution test


It appears that __stacktrace_impl::_S_current returns an empty sequence of
frames.

It's possible that all the lambda frames are inlined, or skip+2 in
stacktrace.cc causes us to skip real frames that we should keep, or maybe
libbacktrace just doesn't work on this target.=