Launchpad has imported 1 comments from the remote bug at https://sourceware.org/bugzilla/show_bug.cgi?id=31510.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2024-03-19T11:24:14+00:00 Simon Chopin wrote: POSIX documents struct timeval as follows: struct timeval { time_t tv_sec; /* seconds */ suseconds_t tv_usec; /* microseconds */ }; Since bdc4782744df73a8c0559985c54b5b6b9c7a4a74 ("y2038: Add __USE_TIME_BITS64 support for struct timeval") tv_usec can have __suseconds64_t when using 64-bit time, however suseconds_t is unconditionally typedefed to __suseconds_t. That leads to the following: ubuntu@mantic-armhf:~$ cat test.c #include <sys/time.h> #include <stdio.h> #include <assert.h> int main(void) { struct timeval tv; printf("tv_usec: %d, suseconds_t: %d\n", sizeof(tv.tv_usec), sizeof(suseconds_t)); assert(sizeof(tv.tv_usec) == sizeof(suseconds_t)); return 0; } ubuntu@mantic-armhf:~$ gcc test.c && ./a.out tv_usec: 4, suseconds_t: 4 ubuntu@mantic-armhf:~$ gcc -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64 test.c && ./a.out tv_usec: 8, suseconds_t: 4 a.out: test.c:9: main: Assertion `sizeof(tv.tv_usec) == sizeof(suseconds_t)' failed. Aborted (core dumped) We noticed this when running the conformance tests on Ubuntu Noble, where we've set _TIME_BITS=64 in the default GCC flags as part of the ongoing t64 transition. Reply at: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/2055837/comments/1 ** Changed in: glibc Status: Unknown => New ** Changed in: glibc Importance: Unknown => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2055837 Title: Wrong type for timeval.tv_usec on armhf/Noble (and other failures) To manage notifications about this bug go to: https://bugs.launchpad.net/glibc/+bug/2055837/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
