[all-commits] [llvm/llvm-project] 2a5765: [OpenMP] [Flang] Resolved Issue llvm#76121: Implem...

[chandan singh via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2a57657d5571b097eb0070e6f26ad4954c0fd990
      https://github.com/llvm/llvm-project/commit/2a57657d5571b097eb0070e6f26ad4954c0fd990
  Author: chandan singh <36783761+chandankds at users.noreply.github.com>
  Date:   2024-05-09 (Thu, 09 May 2024)

  Changed paths:
    M openmp/runtime/src/z_Linux_asm.S
    A openmp/runtime/test/misc_bugs/omp__kmpc_fork_call_if.c

  Log Message:
  -----------
  [OpenMP] [Flang] Resolved Issue llvm#76121: Implemented Check for Unhandled Arguments in __kmpc_fork_call_if (#82221)

Root cause: Segmentation fault is caused by null pointer dereference
inside the __kmpc_fork_call_if function at
https://github.com/llvm/llvm-project/blob/main/openmp/runtime/src/z_Linux_asm.S#L1186
. __kmpc_fork_call_if is missing case to handle argc=0 .

Fix: Added a check inside the __kmp_invoke_microtask function to handle
the case when argc is 0.

---------

Co-authored-by: Singh <chasingh at amd.com>



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