[flang-commits] [flang] [llvm] [Flang][OpenMP][Sema] Adding parsing and semantic support for scan directive. (PR #102792)

[Sergio Afonso via flang-commits]

================
@@ -1591,6 +1593,19 @@ bool OmpAttributeVisitor::Pre(
   default:
     break;
   }
+  if (standaloneDir.v == llvm::omp::Directive::OMPD_scan) {
+    if ((std::get<parser::OmpClauseList>(x.t).v.size() != 1)) {
+      context_.Say(standaloneDir.source,
+          "Exactly one of `exclusive` or `inclusive` clause is expected"_err_en_US);
+    }
+    if (!parentContext ||
+        (!llvm::omp::scanAllowedSet.test(parentContext->directive))) {
----------------
skatrak wrote:

```suggestion
        !llvm::omp::scanAllowedSet.test(parentContext->directive)) {
```

https://github.com/llvm/llvm-project/pull/102792