Home | History | Annotate | Download | only in SemaCXX 
      1 // RUN: %clang_cc1 -std=c++11 -fms-extensions -fms-compatibility -fsyntax-only -triple=i386-pc-win32 -verify %s
      2 
      3 struct A { int a; };
      4 
      5 #pragma vtordisp(pop) // expected-warning {{#pragma vtordisp(pop, ...) failed: stack empty}}
      6 #pragma vtordisp(push, 0)
      7 #pragma vtordisp(push, 1)
      8 #pragma vtordisp(push, 2)
      9 struct B : virtual A { int b; };
     10 #pragma vtordisp(pop)
     11 #pragma vtordisp(pop)
     12 #pragma vtordisp(pop)
     13 #pragma vtordisp(pop) // expected-warning {{#pragma vtordisp(pop, ...) failed: stack empty}}
     14 
     15 #pragma vtordisp(push, 3) // expected-warning {{expected integer between 0 and 2 inclusive in '#pragma vtordisp' - ignored}}
     16 #pragma vtordisp()
     17 
     18 #define ONE 1
     19 #pragma vtordisp(push, ONE)
     20 #define TWO 1
     21 #pragma vtordisp(push, TWO)
     22 
     23 // Test a reset.
     24 #pragma vtordisp()
     25 #pragma vtordisp(pop) // stack should NOT be affected by reset.
     26                       // Now stack contains '1'.
     27 
     28 #pragma vtordisp(      // expected-warning {{unknown action for '#pragma vtordisp' - ignored}}
     29 #pragma vtordisp(asdf) // expected-warning {{unknown action for '#pragma vtordisp' - ignored}}
     30 #pragma vtordisp(,)    // expected-warning {{unknown action for '#pragma vtordisp' - ignored}}
     31 #pragma vtordisp       // expected-warning {{missing '(' after '#pragma vtordisp' - ignoring}}
     32 #pragma vtordisp(3)    // expected-warning {{expected integer between 0 and 2 inclusive in '#pragma vtordisp' - ignored}}
     33 #pragma vtordisp(), stuff // expected-warning {{extra tokens}}
     34 
     35 struct C {
     36 #pragma vtordisp()
     37   struct D : virtual A {
     38   };
     39 };
     40 
     41 struct E {
     42   virtual ~E();
     43   virtual void f();
     44 };
     45 
     46 #pragma vtordisp(pop) // After this stack should be empty.
     47 #pragma vtordisp(pop) // expected-warning {{#pragma vtordisp(pop, ...) failed: stack empty}}
     48 
     49 void g() {
     50   #pragma vtordisp(push, 2)
     51   struct F : virtual E {
     52     virtual ~F();
     53     virtual void f();
     54   };
     55 }
     56 
     57 #pragma vtordisp(pop) // OK because of local vtordisp(2) in g().
     58 
     59 struct G {
     60   void f() {
     61     #pragma vtordisp(push, 2) // Method-local pragma - stack will be restored on exit.
     62   }
     63 };
     64 
     65 // Stack is restored on exit from G::f(), nothing to pop.
     66 #pragma vtordisp(pop) // expected-warning {{#pragma vtordisp(pop, ...) failed: stack empty}}
     67 
     68 int g2()
     69 // FIXME: Our implementation based on token insertion makes it impossible for
     70 // the pragma to appear everywhere we should support it.
     71 // #pragma vtordisp()
     72 {
     73   return 0;
     74 }
     75