[llvm-bugs] [Bug 35731] New: OpenMP tests sometimes deadlock

via llvm-bugs llvm-bugs at lists.llvm.org
Fri Dec 22 06:37:32 PST 2017


            Bug ID: 35731
           Summary: OpenMP tests sometimes deadlock
           Product: OpenMP
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Runtime Library
          Assignee: unassignedbugs at nondot.org
          Reporter: mgorny at gentoo.org
                CC: llvm-bugs at lists.llvm.org

Created attachment 19595
  --> https://bugs.llvm.org/attachment.cgi?id=19595&action=edit

We've had a few reports of openmp test suite deadlocking on people. I'm
recently able to reproduce it reliably with
worksharing/for/kmp_sch_simd_guided.c. The attached log shows the output of the
build when I terminated it after ~35 minutes of CPU time.

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