[llvm-bugs] [Bug 51231] New: [OpenMP] Data sharing attribute of event handle for detachable task

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https://bugs.llvm.org/show_bug.cgi?id=51231

            Bug ID: 51231
           Summary: [OpenMP] Data sharing attribute of event handle for
                    detachable task
           Product: OpenMP
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Clang Compiler Support
          Assignee: unassignedclangbugs at nondot.org
          Reporter: protze at itc.rwth-aachen.de
                CC: llvm-bugs at lists.llvm.org

https://lab.llvm.org/buildbot/#/builders/4/builds/11170/steps/6/logs/FAIL__libomp__detach_nested_task_c

The error contradicts a restriction in the OpenMP spec:

error: variable 'event' must have explicitly specified data sharing attributes


This restriction for the detach clause applies:

A variable that appears in a detach clause cannot appear in a data-sharing
attribute clause on the same construct.


clang should accept this line without error:

#pragma omp task detach(event) firstprivate(i,n) shared(ret) default(none)

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