[clang] [Clang] Skip function template bodies that have no dependent context (PR #226805)

[Oliver Hunt via cfe-commits]

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@@ -138,6 +138,16 @@ NamedDecl *Parser::ParseCXXInlineMethodDef(
     return FnD;
   }
 
+  // The template parameters are in scope but there is no dependent context.
+  if (auto *FD = dyn_cast_if_present<FunctionDecl>(FnD);
+      FD && TemplateInfo.Kind == ParsedTemplateKind::Template &&
+      FD->isInvalidDecl() && !FD->isDependentContext()) {
+    CachedTokens Toks;
+    LexTemplateFunctionForLateParsing(Toks);
+    Actions.ActOnSkippedFunctionBody(FnD);
+    return FnD;
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ojhunt wrote:

This doesn't appear to be OMP specific, are you sure that this is correct? It _feels_ like this is trying to essentially special case the test case?

https://github.com/llvm/llvm-project/pull/226805