xref: /aosp_15_r20/external/clang/test/CodeGenCXX/microsoft-new.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li // RUN: %clang_cc1 -triple i686-pc-win32 -fms-compatibility %s -emit-llvm -o - | FileCheck %s
2*67e74705SXin Li 
3*67e74705SXin Li #include <stddef.h>
4*67e74705SXin Li 
5*67e74705SXin Li struct arbitrary_t {} arbitrary;
6*67e74705SXin Li void *operator new(size_t size, arbitrary_t);
7*67e74705SXin Li 
8*67e74705SXin Li struct arbitrary2_t {} arbitrary2;
9*67e74705SXin Li void *operator new[](size_t size, arbitrary2_t);
10*67e74705SXin Li 
11*67e74705SXin Li namespace PR13164 {
f()12*67e74705SXin Li   void f() {
13*67e74705SXin Li 	// MSVC will fall back on the non-array operator new.
14*67e74705SXin Li     void *a;
15*67e74705SXin Li     int *p = new(arbitrary) int[4];
16*67e74705SXin Li     // CHECK: call i8* @"\01??2@YAPAXIUarbitrary_t@@@Z"(i32 16, %struct.arbitrary_t*
17*67e74705SXin Li   }
18*67e74705SXin Li 
19*67e74705SXin Li   struct S {
20*67e74705SXin Li     void *operator new[](size_t size, arbitrary_t);
21*67e74705SXin Li   };
22*67e74705SXin Li 
g()23*67e74705SXin Li   void g() {
24*67e74705SXin Li     S *s = new(arbitrary) S[2];
25*67e74705SXin Li     // CHECK: call i8* @"\01??_US@PR13164@@SAPAXIUarbitrary_t@@@Z"(i32 2, %struct.arbitrary_t*
26*67e74705SXin Li     S *s1 = new(arbitrary) S;
27*67e74705SXin Li     // CHECK: call i8* @"\01??2@YAPAXIUarbitrary_t@@@Z"(i32 1, %struct.arbitrary_t*
28*67e74705SXin Li   }
29*67e74705SXin Li 
30*67e74705SXin Li   struct T {
31*67e74705SXin Li     void *operator new(size_t size, arbitrary2_t);
32*67e74705SXin Li   };
33*67e74705SXin Li 
h()34*67e74705SXin Li   void h() {
35*67e74705SXin Li     // This should still call the global operator new[].
36*67e74705SXin Li     T *t = new(arbitrary2) T[2];
37*67e74705SXin Li     // CHECK: call i8* @"\01??_U@YAPAXIUarbitrary2_t@@@Z"(i32 2, %struct.arbitrary2_t*
38*67e74705SXin Li   }
39*67e74705SXin Li }
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