[Bug 1767493] Re: 64bit integer division broken on 32bit armhf
[Expired for gcc-5 (Ubuntu) because there has been no activity for 60 days.] ** Changed in: gcc-5 (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767493 Title: 64bit integer division broken on 32bit armhf To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-5/+bug/1767493/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1767493] Re: 64bit integer division broken on 32bit armhf
I do not have access to and Orange Pi or NanoPi Duo. I suggest trying again with an updated toolchain and see if you still have the issue, and if so, specify the gcc invocation and board information. Thanks! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767493 Title: 64bit integer division broken on 32bit armhf To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-5/+bug/1767493/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1767493] Re: 64bit integer division broken on 32bit armhf
I took a look at this and am unable to reproduce. The test program compiles and ran fine on an Ubuntu 16.04 system: $ ./test value1: -3 Running this under valgrind I see: $ valgrind --leak-check=yes ./test ==16237== Memcheck, a memory error detector ==16237== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al. ==16237== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info ==16237== Command: ./test ==16237== ==16237== Invalid write of size 4 ==16237==at 0x1049A: ??? (in /home/jdstrand/test) ==16237== Address 0xbdf19540 is on thread 1's stack ==16237== 16 bytes below stack pointer ==16237== ==16237== Conditional jump or move depends on uninitialised value(s) ==16237==at 0x10610: __udivmoddi4 (in /home/jdstrand/test) ==16237== ==16237== Use of uninitialised value of size 4 ==16237==at 0x10612: __udivmoddi4 (in /home/jdstrand/test) ==16237== ==16237== Use of uninitialised value of size 4 ==16237==at 0x104EA: ??? (in /home/jdstrand/test) ==16237== value1: -3 ==16237== ==16237== HEAP SUMMARY: ==16237== in use at exit: 0 bytes in 0 blocks ==16237== total heap usage: 1 allocs, 1 frees, 1,024 bytes allocated ==16237== ==16237== All heap blocks were freed -- no leaks are possible ==16237== ==16237== For counts of detected and suppressed errors, rerun with: -v ==16237== Use --track-origins=yes to see where uninitialised values come from ==16237== ERROR SUMMARY: 5 errors from 4 contexts (suppressed: 6 from 3) (not free from errors, but it didn't crash and value is correct). $ lsb_release -a Distributor ID: Ubuntu Description:Ubuntu 16.04.6 LTS Release:16.04 Codename: xenial $ gcc --version gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.11) 5.4.0 20160609 The test was performed on a Beagle Bone Black, raspberry pi2 and pi3. There does not appear to be a general problem with current gcc-5 on Ubuntu 16.04. Unmarking as security for now, but please provide more info on how to reproduce and this can be revisited. Since this doesn't seem to be an issue with valgrind, marking that as invalid and gcc-5 as Incomplete. ** Changed in: gcc-5 (Ubuntu) Status: Invalid => Incomplete ** Changed in: valgrind (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767493 Title: 64bit integer division broken on 32bit armhf To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-5/+bug/1767493/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1767493] Re: 64bit integer division broken on 32bit armhf
** Changed in: gcc-5 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767493 Title: 64bit integer division broken on 32bit armhf To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-5/+bug/1767493/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1767493] Re: 64bit integer division broken on 32bit armhf
Rumours suggest this is a valgrind issue. ** Also affects: valgrind (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767493 Title: 64bit integer division broken on 32bit armhf To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-5/+bug/1767493/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1767493] Re: 64bit integer division broken on 32bit armhf
** Package changed: ubuntu => gcc-5 (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767493 Title: 64bit integer division broken on 32bit armhf To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcc-5/+bug/1767493/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1767493] Re: 64bit integer division broken on 32bit armhf
** Information type changed from Private Security to Public Security -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767493 Title: 64bit integer division broken on 32bit armhf To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1767493/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
