Your message dated Wed, 26 Apr 2023 08:50:50 +0200
with message-id <[email protected]>
and subject line gcc-6 has been removed from Debian
has caused the Debian Bug report #859116,
regarding GCC miscompiles following code, unlike clang
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
859116: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=859116
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: g++-6
Version: 6.3.0-11
Severity: normal
Tags: upstream
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Hi.
Yes, this issue should be sent upstream. But i'm unable to do that
because their bugzilla does not want to reset my password.
The attached testcase was minimized.
With gcc (6), the exit code is 10.
With clang (tried with current svn version), the exit code is 0.
As it should be pretty clear from the code, 0 is the correct answer.
$ ./test.sh
0 compilation passed, GOOD
1 expected output, GOOD
2 compilation passed, GOOD
3 expected output, GOOD
ALL GOOD, valid testcase
- -- System Information:
Debian Release: 9.0
APT prefers unstable
APT policy: (990, 'unstable'), (500, 'unstable-debug'), (1,
'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages g++-6 depends on:
ii gcc-6 6.3.0-11
ii gcc-6-base 6.3.0-11
ii libc6 2.24-9
ii libgmp10 2:6.1.2+dfsg-1
ii libisl15 0.18-1
ii libmpc3 1.0.3-1+b2
ii libmpfr4 3.1.5-1
ii libstdc++-6-dev 6.3.0-11
ii zlib1g 1:1.2.8.dfsg-5
g++-6 recommends no packages.
Versions of packages g++-6 suggests:
pn g++-6-multilib <none>
ii gcc-6-doc 6.1.0-1
ii libstdc++6-6-dbg 6.3.0-11
- -- no debconf information
*** buffer.cpp
struct a {
int b;
int c = 0;
a(int d) : b(d) {}
int e() { return b - c; }
void *f(int d) {
c = d;
return 0;
}
};
int g(void *, int h) { return h; }
a i(10);
int j = i.e();
int main() { return g(i.f(j), i.e()); }
*** test.sh
#!/bin/bash
# gcc -E, no -P
# $ creduce --n 16 test.sh ${FILE}
GCC=/usr/bin/gcc-6
CLANG=/usr/bin/clang++-5.0
FILE=buffer.cpp
FLAGS="-std=c++11 -Wall -Wextra -Werror -o buffer"
$GCC $FLAGS $FILE #>/dev/null 2>&1
if [ $? -ne 0 ]
then
echo "0 compilation failed, bad"
exit 1;
else
echo "0 compilation passed, GOOD"
fi
./buffer >/dev/null 2>&1
if [ $? -ne 10 ]
then
echo "1 unexpected output, bad"
exit 1;
else
echo "1 expected output, GOOD"
fi
$CLANG $FLAGS $FILE >/dev/null 2>&1
if [ $? -ne 0 ]
then
echo "2 compilation failed, bad"
exit 1;
else
echo "2 compilation passed, GOOD"
fi
./buffer >/dev/null 2>&1
if [ $? -ne 0 ]
then
echo "3 unexpected output, bad"
exit 1;
else
echo "3 expected output, GOOD"
fi
echo "ALL GOOD, valid testcase"
exit 0;
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--- End Message ---
--- Begin Message ---
Version: 6.5.0-2+rm
src:gcc-6 was last released with Debian 9 (stretch)
in June 2017 and was removed from the Debian archive afterwards.
It has been superseded by newer versions.
See https://bugs.debian.org/920171 for details on the removal.
After regular security support for stretch ended in July 2020 and LTS
support ended in July 2022, I'm closing the remaining bug reports now.
In case the bug is still present in recent releases, please reopen and
reassign it.
Andreas
--- End Message ---
