[flang][NFC] Fix gcc 9 warning in omp combined construct checks.

DavidTruby · DavidTruby · commit 52492e6c430a · 2020-04-27T17:59:06.000+01:00
diff --git a/flang/lib/Semantics/check-omp-structure.cpp b/flang/lib/Semantics/check-omp-structure.cpp
@@ -261,7 +261,7 @@ void OmpStructureChecker::Enter(const parser::OpenMPLoopConstruct &x) {
   case parser::OmpLoopDirective::Directive::TaskloopSimd: {
     PushContext(beginDir.source, OmpDirective::TASKLOOP_SIMD);
     SetContextAllowed(
-        taskloopAllowedClauses | simdAllowedClauses - OmpClause::REDUCTION);
+        (taskloopAllowedClauses | simdAllowedClauses) - OmpClause::REDUCTION);
     SetContextAllowedOnce(taskloopAllowedOnceClauses | simdAllowedOnceClauses);
     SetContextAllowedExclusive(taskloopAllowedExclusiveClauses);
   } break;
