test/SemaOpenCL/address-spaces.cl

// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only

__constant int ci = 1;

__kernel void foo(__global int *gip) {
  __local int li;
  __local int lj = 2; // expected-error {{'__local' variable cannot have an initializer}}

  int *ip;
  ip = gip; // expected-error {{assigning '__global int *' to 'int *' changes address space of pointer}}
  ip = &li; // expected-error {{assigning '__local int *' to 'int *' changes address space of pointer}}
  ip = &ci; // expected-error {{assigning '__constant int *' to 'int *' changes address space of pointer}}
}

void explicit_cast(global int* g, local int* l, constant int* c, private int* p, const constant int *cc)
{
  g = (global int*) l;    // expected-error {{casting '__local int *' to type '__global int *' changes address space of pointer}}
  g = (global int*) c;    // expected-error {{casting '__constant int *' to type '__global int *' changes address space of pointer}}
  g = (global int*) cc;   // expected-error {{casting 'const __constant int *' to type '__global int *' changes address space of pointer}}
  g = (global int*) p;    // expected-error {{casting 'int *' to type '__global int *' changes address space of pointer}}

  l = (local int*) g;     // expected-error {{casting '__global int *' to type '__local int *' changes address space of pointer}}
  l = (local int*) c;     // expected-error {{casting '__constant int *' to type '__local int *' changes address space of pointer}}
  l = (local int*) cc;    // expected-error {{casting 'const __constant int *' to type '__local int *' changes address space of pointer}}
  l = (local int*) p;     // expected-error {{casting 'int *' to type '__local int *' changes address space of pointer}}

  c = (constant int*) g;  // expected-error {{casting '__global int *' to type '__constant int *' changes address space of pointer}}
  c = (constant int*) l;  // expected-error {{casting '__local int *' to type '__constant int *' changes address space of pointer}}
  c = (constant int*) p;  // expected-error {{casting 'int *' to type '__constant int *' changes address space of pointer}}

  p = (private int*) g;   // expected-error {{casting '__global int *' to type 'int *' changes address space of pointer}}
  p = (private int*) l;   // expected-error {{casting '__local int *' to type 'int *' changes address space of pointer}}
  p = (private int*) c;   // expected-error {{casting '__constant int *' to type 'int *' changes address space of pointer}}
  p = (private int*) cc;  // expected-error {{casting 'const __constant int *' to type 'int *' changes address space of pointer}}
}

void ok_explicit_casts(global int *g, global int* g2, local int* l, local int* l2, private int* p, private int* p2)
{
  g = (global int*) g2;
  l = (local int*) l2;
  p = (private int*) p2;
}