Add printf in dtor

Author: weliveindetail

clang/test/Interpreter/force-codegen-dtor.cpp

@@ -1,13 +1,17 @@
+// REQUIRES: host-supports-jit
 // UNSUPPORTED: system-aix
 
 // RUN: cat %s | clang-repl | FileCheck %s
 int *x = new int();
 template <class T> struct GuardX { T *&x; GuardX(T *&x) : x(x) {}; ~GuardX(); };
-template <class T> GuardX<T>::~GuardX() { delete x; x = nullptr; }
 
-// clang would normally defer codegen for ~GuardX()
-// Make sure that RuntimeInterfaceBuilder requests it explicitly
+// clang normally defers codegen for this out-of-line ~GuardX(), which would
+// cause the JIT to report Symbols not found: [ _ZN6GuardXIiED2Ev ]
+extern "C" int printf(const char *, ...);
+template <class T> GuardX<T>::~GuardX() { delete x; printf("Running dtor\n"); }
+
+// Let's make sure that the RuntimeInterfaceBuilder requests it explicitly:
 (GuardX(x))
 
 // CHECK-NOT: Symbols not found
-// CHECK-NOT: _ZN6GuardXIiED2Ev
+// CHECK: Running dtor