-extern StgTRecHeader *stmStartTransaction(StgRegTable *reg, StgTRecHeader *outer);
-extern StgTRecHeader *stmStartNestedTransaction(StgRegTable *reg, StgTRecHeader *outer
+extern StgTRecHeader *stmStartTransaction(Capability *cap, StgTRecHeader *outer);
+extern StgTRecHeader *stmStartNestedTransaction(Capability *cap, StgTRecHeader *outer