Public bug reported: Package: glibc Version: 2.31
Use of mktime with tm_isdst=1 results in -1 indicating an error. This appears unexpected, and cannot be replicated on OS X 11.6.1, Centos 7.9, Fedora 35, Alpine or RHEL 8. The issue was first observed on Github Actions ubuntu-latest (20.04). This issue was originally opened on the CPython bug tracker. They advised opening a bug report with both Ubuntu and Debian. The bug opened with Debian can be found here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1001774 The original report with CPython can be found here: https://bugs.python.org/issue44413 An example C program follows at the end of the bug report, and can be compiled with “gcc bug.c -o bug”. An example of execution of the bug, and failure, within a glibc 2.31 environment can be found here: https://github.com/wasade/cpython/runs/4541212472?check_suite_focus=true#step:17:57 Thank you for your time. Please let me know if additional information would be helpful. This is my first bug report to Ubuntu. Though I reviewed the guidance docs, I apologize in advance if I overlooked something. -Daniel #include <time.h> #include <stdio.h> void do_test() { struct tm tm_works = { .tm_year=117, .tm_mon=4, .tm_mday=26, .tm_hour=15, .tm_min=30, .tm_sec=16, .tm_wday=4, .tm_yday=145, .tm_isdst=-1 }; struct tm tm_fails = { .tm_year=117, .tm_mon=4, .tm_mday=26, .tm_hour=15, .tm_min=30, .tm_sec=16, .tm_wday=4, .tm_yday=145, .tm_isdst=1 }; time_t works = mktime(&tm_works); time_t fails = mktime(&tm_fails); if(works == -1) { printf("Unexpected failure\n"); } else { if(works == fails) { printf("Test passed\n"); } else { printf("Test failed: works=%d; fails=%d\n", (int)works, (int)fails); } } } int main(int argc, char **argv) { do_test(); } ** Affects: glibc (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/1954963 Title: tm_isdst=1 with mktime on 20.04 produces unexpected output To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1954963/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
