[cfe-dev] issues about assigning string literal to __constant char* in OpenCL

Liu, Yaxun (Sam) Yaxun.Liu at amd.com
Tue Apr 16 10:42:48 PDT 2013

I was trying to compile some simple OpenCL source with clang:

__constant char* __constant a = "hello";                      // <----- error in line 1

int myprintf(__constant char * restrict format, ...);

void foo() {
  myprintf("%d\n", 5);   // <------------ error in line 6

Clang emits error msg:

1:18: error: initializing '__constant char *' with an expression of type 'char *' changes address space of pointer
:6:12: error: passing 'char *' to parameter of type '__constant char *' changes address space of pointer

Is this a bug? Otherwise how do I initialize a __constant char* __constant? Thanks.

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