Fix bug: IgnoreInheritance in lookup (#6146)

* Fix bug: IgnoreInheritance in lookup

When specifying IgnoreInheritance in lookup, it will ignore
all members in the self extension for generic, the reason is
that it doesn't specialize the target type of the extension
decl when comparing with self type, so it will result that every
type is unequal to the target type.

1 files changed, 3 insertions, 2 deletions

diff --git a/source/slang/slang-check-overload.cpp b/source/slang/slang-check-overload.cpp
index 1ab3aa5b0..bca2f7587 100644
--- a/source/slang/slang-check-overload.cpp
+++ b/source/slang/slang-check-overload.cpp
@@ -2167,7 +2167,8 @@ void SemanticsVisitor::AddTypeOverloadCandidates(Type* type, OverloadResolveCont
     // from a value of the same type. There is no need in Slang for
     // "copy constructors" but the core module currently has to define
     // some just to make code that does, e.g., `float(1.0f)` work.)
-
+    LookupOptions options =
+        LookupOptions(uint8_t(LookupOptions::IgnoreInheritance) | uint8_t(LookupOptions::NoDeref));
     LookupResult initializers = lookUpMember(
         m_astBuilder,
         this,
@@ -2175,7 +2176,7 @@ void SemanticsVisitor::AddTypeOverloadCandidates(Type* type, OverloadResolveCont
         type,
         context.sourceScope,
         LookupMask::Default,
-        LookupOptions::NoDeref);
+        options);
 
     AddOverloadCandidates(initializers, context);
 }