Improve diagnostics over ambiguous references. (#7930)

* Improve diagnostics over ambiguous references.

* Fix.

* Remove files.

* Fix some optix hitobject intrinsics.

* Fix some hitobject intrinsics for optix.

* Fix.

* update rhi

* revert slang-rhi

* Update slang-rhi

1 files changed, 8 insertions, 0 deletions

diff --git a/source/slang/slang-check-overload.cpp b/source/slang/slang-check-overload.cpp
index 8a8da3eb2..5a2b0872f 100644
--- a/source/slang/slang-check-overload.cpp
+++ b/source/slang/slang-check-overload.cpp
@@ -2975,6 +2975,14 @@ Expr* SemanticsVisitor::ResolveInvoke(InvokeExpr* expr)
 
     // Nothing at all was found that we could even consider invoking.
     // In all other cases, this is an error.
+    if (auto overloadExpr = as<OverloadedExpr>(funcExpr))
+    {
+        if (overloadExpr->lookupResult2.isValid())
+        {
+            diagnoseAmbiguousReference(funcExpr);
+            return CreateErrorExpr(expr);
+        }
+    }
     getSink()->diagnose(expr->functionExpr, Diagnostics::expectedFunction, funcExpr->type);
     expr->type = QualType(m_astBuilder->getErrorType());
     return expr;