Add compiler option to treat enum types as unscoped. (#4354)

1 files changed, 6 insertions, 0 deletions

diff --git a/source/slang/slang-lookup.cpp b/source/slang/slang-lookup.cpp
index 5e30e3ce9..c1895d754 100644
--- a/source/slang/slang-lookup.cpp
+++ b/source/slang/slang-lookup.cpp
@@ -224,6 +224,12 @@ static void _lookUpDirectAndTransparentMembers(
         }
     }
 
+    // Don't look up transparent members if we are looking for attributes, since
+    // they are always defined at global scope in the stdlib. Trying to lookup transparent
+    // members during attribute lookup can lead to infinite recursion on transparent types.
+    if ((int)request.mask & (int)LookupMask::Attribute)
+        return;
+
     for(auto transparentInfo : containerDecl->getTransparentMembers())
     {
         // The reference to the transparent member should use the same