make CompileRequest retain specailized IR module.

This is to workaround with the issue that the Types returned in ProgramLayout may reference to IRWitnessTables via GlobalGenericParamSubstitution.

1 files changed, 7 insertions, 1 deletions

diff --git a/source/slang/slang.cpp b/source/slang/slang.cpp
index b65ec5615..42e412438 100644
--- a/source/slang/slang.cpp
+++ b/source/slang/slang.cpp
@@ -123,7 +123,13 @@ CompileRequest::CompileRequest(Session* session)
 }
 
 CompileRequest::~CompileRequest()
-{}
+{
+    // delete things that may reference IR objects first
+    targets = decltype(targets)();
+    translationUnits = decltype(translationUnits)();
+    entryPoints = decltype(entryPoints)();
+    types = decltype(types)();
+}
 
 
 RefPtr<Expr> CompileRequest::parseTypeString(TranslationUnitRequest * translationUnit, String typeStr, RefPtr<Scope> scope)