Import RHEL's regression test for #1960701

tests/Regression/bz1960701-Wrong-code-regression-starting-with-gcc-8-2/main.fmf

@@ -0,0 +1,16 @@
+summary: Test for BZ#1960701 (Wrong-code regression starting with gcc 8.2)
+description: |
+    Bug summary: Wrong-code regression starting with gcc 8.2
+    Bugzilla link: https://bugzilla.redhat.com/show_bug.cgi?id=1960701
+contact: Vaclav Kadlcik <vkadlcik@redhat.com>
+component:
+- gcc
+test: ./runtest.sh
+framework: beakerlib
+recommend:
+- gcc-c++
+duration: 15m
+link:
+-   relates: https://bugzilla.redhat.com/show_bug.cgi?id=1960701
+extra-summary: /tools/gcc/Regression/bz1960701-Wrong-code-regression-starting-with-gcc-8-2
+extra-task: /tools/gcc/Regression/bz1960701-Wrong-code-regression-starting-with-gcc-8-2

tests/Regression/bz1960701-Wrong-code-regression-starting-with-gcc-8-2/reproducer.cc

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+#include <vector>
+
+struct T {
+  unsigned a;
+  float b {8.};
+};
+
+int main()
+{
+  T t = {1};
+  std::vector<T> tt = {{1}, {2}};
+  if (t.a != 1 || t.b != 8.0f || tt[0].a != 1 || tt[0].b != 8.0f || tt[1].a != 2 || tt[1].b != 8.0f)
+    __builtin_abort ();
+}

tests/Regression/bz1960701-Wrong-code-regression-starting-with-gcc-8-2/runtest.sh

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+#!/usr/bin/env bash
+# vim: dict+=/usr/share/beakerlib/dictionary.vim cpt=.,w,b,u,t,i,k
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   runtest.sh of /tools/gcc/Regression/bz1960701-Wrong-code-regression-starting-with-gcc-8-2
+#   Description: Test for BZ#1960701 (Wrong-code regression starting with gcc 8.2)
+#   Author: Vaclav Kadlcik <vkadlcik@redhat.com>
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   Copyright (c) 2021 Red Hat, Inc.
+#
+#   This program is free software: you can redistribute it and/or
+#   modify it under the terms of the GNU General Public License as
+#   published by the Free Software Foundation, either version 2 of
+#   the License, or (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be
+#   useful, but WITHOUT ANY WARRANTY; without even the implied
+#   warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+#   PURPOSE.  See the GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program. If not, see http://www.gnu.org/licenses/.
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+# Include Beaker environment
+. /usr/share/beakerlib/beakerlib.sh || exit 1
+
+GCC="${GCC:-$(type -P gcc)}"
+PACKAGE=$(rpm --qf '%{name}\n' -qf $GCC | head -1)
+PACKAGES="${PACKAGE} ${PACKAGE}-c++"
+
+rlJournalStart
+    rlPhaseStartSetup
+        rlLogInfo "PACKAGES=$PACKAGES"
+        rlRun "dnf -y install $PACKAGES" 0-255
+        rlAssertRpm --all
+        rlRun "TmpDir=\$(mktemp -d)"
+        rlRun "cp reproducer.cc $TmpDir"
+        rlRun "pushd $TmpDir"
+    rlPhaseEnd
+
+    rlPhaseStartTest
+        rlRun 'g++ -o reproducer -Wall -Wextra -std=c++17 reproducer.cc'
+        rlRun './reproducer'
+    rlPhaseEnd
+
+    rlPhaseStartCleanup
+        rlRun 'popd'
+        rlRun "rm -r $TmpDir"
+    rlPhaseEnd
+rlJournalPrintText
+rlJournalEnd