File: union-init.cu

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (44 lines) | stat: -rw-r--r-- 1,143 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
// RUN: %clang_cc1 %s --std=c++11 -triple x86_64-linux-unknown -fsyntax-only -o - -verify

#include "Inputs/cuda.h"

struct A {
  int a;
  __device__ A() { a = 1; }
  __device__ ~A() { a = 2; }
};

// This can be a global var since ctor/dtors of data members are not called.
union B {
  A a;
  __device__ B() {}
  __device__ ~B() {}
};

// This cannot be a global var since it has a dynamic ctor.
union C {
  A a;
  __device__ C() { a.a = 3; }
  __device__ ~C() {}
};

// This cannot be a global var since it has a dynamic dtor.
union D {
  A a;
  __device__ D() { }
  __device__ ~D() { a.a = 4; }
};

__device__ B b;
__device__ C c;
// expected-error@-1 {{dynamic initialization is not supported for __device__, __constant__, and __shared__ variables.}}
__device__ D d;
// expected-error@-1 {{dynamic initialization is not supported for __device__, __constant__, and __shared__ variables.}}

__device__ void foo() {
  __shared__ B b;
  __shared__ C c;
  // expected-error@-1 {{initialization is not supported for __shared__ variables.}}
  __shared__ D d;
  // expected-error@-1 {{initialization is not supported for __shared__ variables.}}
}