1 files changed, 5 insertions, 0 deletions
diff --git a/source/slang/slang-mangle.cpp b/source/slang/slang-mangle.cpp
index 93b29ccbe..438ab2187 100644
--- a/source/slang/slang-mangle.cpp
+++ b/source/slang/slang-mangle.cpp
@@ -444,6 +444,11 @@ namespace Slang
             // be treated as equivalent to the type itself.
             emit(context, "X");
             emitType(context, getTargetType(context->astBuilder, extensionDeclRef));
+            for (auto inheritanceDecl : getMembersOfType<InheritanceDecl>(context->astBuilder, extensionDeclRef))
+            {
+                emit(context, "I");
+                emitType(context, getSup(context->astBuilder, inheritanceDecl));
+            }
             return;
         }