[c] Return local object storage with a destructor.

GenC.fu

@@ -2951,7 +2951,7 @@ public class GenC : GenCCpp
 						// Optimization: avoid copy
 						WriteDestructAll(local);
 						Write("return ");
-						if (this.CurrentMethod.Type is FuClassType resultPtr)
+						if (this.CurrentMethod.Type is FuClassType resultPtr && !(resultPtr is FuStorageType))
 							WriteClassPtr(resultPtr.Class, symbol, FuPriority.Argument); // upcast, but don't AddRef
 						else
 							symbol.Accept(this, FuPriority.Argument);

libfut.cpp

@@ -11869,7 +11869,8 @@ void GenC::visitReturn(const FuReturn * statement)
 				if (std::find(this->varsToDestruct.begin(), this->varsToDestruct.end(), local) != this->varsToDestruct.end()) {
 					writeDestructAll(local);
 					write("return ");
-					if (const FuClassType *resultPtr = dynamic_cast<const FuClassType *>(this->currentMethod->type.get()))
+					const FuClassType * resultPtr;
+					if ((resultPtr = dynamic_cast<const FuClassType *>(this->currentMethod->type.get())) && !dynamic_cast<const FuStorageType *>(resultPtr))
 						writeClassPtr(resultPtr->class_, symbol, FuPriority::argument);
 					else
 						symbol->accept(this, FuPriority::argument);

libfut.cs

@@ -12139,7 +12139,7 @@ internal override void VisitReturn(FuReturn statement)
 						if (this.VarsToDestruct.Contains(local)) {
 							WriteDestructAll(local);
 							Write("return ");
-							if (this.CurrentMethod.Type is FuClassType resultPtr)
+							if (this.CurrentMethod.Type is FuClassType resultPtr && !(resultPtr is FuStorageType))
 								WriteClassPtr(resultPtr.Class, symbol, FuPriority.Argument);
 							else
 								symbol.Accept(this, FuPriority.Argument);

libfut.js

@@ -12539,7 +12539,7 @@ export class GenC extends GenCCpp
 						this.#writeDestructAll(local);
 						this.write("return ");
 						let resultPtr;
-						if ((resultPtr = this.currentMethod.type) instanceof FuClassType)
+						if ((resultPtr = this.currentMethod.type) instanceof FuClassType && !(resultPtr instanceof FuStorageType))
 							this.#writeClassPtr(resultPtr.class, symbol, FuPriority.ARGUMENT);
 						else
 							symbol.accept(this, FuPriority.ARGUMENT);

test/MethodArgTempObjectStgDestructor.fu

@@ -9,7 +9,7 @@ public static class Test
 	{
 		Data() o;
 		o.S = "foo";
-		return o; //FAIL: c TODO
+		return o;
 	}
 
 	static string AcceptPtr(Data d)
@@ -19,6 +19,6 @@ public static class Test
 
 	public static bool Run()
 	{
-		return AcceptPtr(ReturnStorage()) == "foo";
+		return AcceptPtr(ReturnStorage()) == "foo"; //FAIL: c TODO
 	}
 }