Public bug reported: This bug was observed on multiple versions of Ubuntu and clang.
Versions: Ubuntu: Ubuntu 18.04.5 LTS, Ubuntu 20.04.1 LTS clang: 8.0.0-3~ubuntu18.04.2, 9.0.0-2~ubuntu18.04.2, 10.0.0-4ubuntu1~18.04.2, 9.0.1-12, 10.0.0-4ubuntu1 When trying to use OMPT (https://www.openmp.org/spec- html/5.0/openmpch4.html) by defining the corresponding functions in an shared object and loading it with LD_PRELOAD it gives no result. The functions are not called, not even the first function: ompt_start_tool. I have included a small code to reproduce the bug. To run it just do: make make run The expected output is (up to execution reordering): ompt_start_tool was called Hello from thread 0 of 4! Hello from thread 3 of 4! Hello from thread 2 of 4! Hello from thread 1 of 4! While Ubuntu outputs (up to execution reordering): Hello from thread 0 of 4! Hello from thread 3 of 4! Hello from thread 2 of 4! Hello from thread 1 of 4! It does not call ompt_start_tool. It works as expected on Fedora 32 with clang version 10.0.1-2. It also works as expected on Debian GNU/Linux bullseye/sid with clang version 9.0.1-14. Thus, it's a bug. ** Affects: llvm-defaults (Ubuntu) Importance: Undecided Status: New ** Attachment added: "Code that shows the bug" https://bugs.launchpad.net/bugs/1899199/+attachment/5420027/+files/code.zip -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1899199 Title: OMPT with LD_PRELOAD not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/llvm-defaults/+bug/1899199/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
