more to fixing memory leaks

1. reorder destruction order of several key classes to avoid using deleted IR objects when destroying Types
2. remove Session::canonicalTypes and make each Type own a RefPtr to the canonicalType, to allow types to be destroyed along with each IRModule it belongs to.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/slang/compiler.h b/source/slang/compiler.h
index 7ead5d07e..b1cebc2a1 100644
--- a/source/slang/compiler.h
+++ b/source/slang/compiler.h
@@ -450,7 +450,6 @@ namespace Slang
 
         Dictionary<int, RefPtr<Type>> builtinTypes;
         Dictionary<String, Decl*> magicDecls;
-        List<RefPtr<Type>> canonicalTypes;
 
         void initializeTypes();
 
@@ -505,6 +504,7 @@ namespace Slang
             RefPtr<Scope> const&    scope,
             String const&           path,
             String const&           source);
+        ~Session();
     };
 
 }