[clang] FunctionDecl::getFunctionTypeLoc: ignore function type attributes (PR #118420)

[Robert Dazi via cfe-commits]

================
@@ -3876,8 +3876,17 @@ bool FunctionDecl::doesDeclarationForceExternallyVisibleDefinition() const {
 
 FunctionTypeLoc FunctionDecl::getFunctionTypeLoc() const {
   const TypeSourceInfo *TSI = getTypeSourceInfo();
-  return TSI ? TSI->getTypeLoc().IgnoreParens().getAs<FunctionTypeLoc>()
-             : FunctionTypeLoc();
+
+  if (!TSI)
+    return FunctionTypeLoc();
+
+  TypeLoc TL = TSI->getTypeLoc().IgnoreParens();
+
+  // ignore function type attributes
+  while (auto ATL = TL.getAs<AttributedTypeLoc>())
+    TL = ATL.getModifiedLoc();
----------------
v01dXYZ wrote:

Glad I've made this error. I'll start by adding your example as a test.

https://github.com/llvm/llvm-project/pull/118420