clang/test/CodeGenCXX/microsoft-new.cpp

   1 // RUN: %clang_cc1 -triple i686-pc-win32 -fms-compatibility %s -emit-llvm -o - | FileCheck %s
   2
   3 #include <stddef.h>
   4
   5 struct arbitrary_t {} arbitrary;
   6 void *operator new(size_t size, arbitrary_t);
   7
   8 struct arbitrary2_t {} arbitrary2;
   9 void *operator new[](size_t size, arbitrary2_t);
  10
  11 namespace PR13164 {
  12   void f() {
  13         // MSVC will fall back on the non-array operator new.
  14     void *a;
  15     int *p = new(arbitrary) int[4];
  16     // CHECK: call noundef ptr @"??2@YAPAXIUarbitrary_t@@@Z"(i32 noundef 16, ptr
  17   }
  18
  19   struct S {
  20     void *operator new[](size_t size, arbitrary_t);
  21   };
  22
  23   void g() {
  24     S *s = new(arbitrary) S[2];
  25     // CHECK: call noundef ptr @"??_US@PR13164@@SAPAXIUarbitrary_t@@@Z"(i32 noundef 2, ptr
  26     S *s1 = new(arbitrary) S;
  27     // CHECK: call noundef ptr @"??2@YAPAXIUarbitrary_t@@@Z"(i32 noundef 1, ptr
  28   }
  29
  30   struct T {
  31     void *operator new(size_t size, arbitrary2_t);
  32   };
  33
  34   void h() {
  35     // This should still call the global operator new[].
  36     T *t = new(arbitrary2) T[2];
  37     // CHECK: call noundef ptr @"??_U@YAPAXIUarbitrary2_t@@@Z"(i32 noundef 2, ptr
  38   }
  39 }