[cfe-dev] Memory allocation in a named address space

[Juan Carlos Martinez Santos]

Hello,

How I can allocate a chunk of memory in a named address space different than
#0 (or intrinsic)?

I tried...

#define HEAP_2 __attribute__((address_space(2)))
#include <stdlib.h>
int main() {
        int HEAP_2 *ptr = malloc(10 * sizeof (int));
        if (ptr == NULL) {
        }
        else {
                free(ptr);
                ptr = NULL;
        }
        return (1);
}

However, I got...

++++++++++++++++++++++++++++++++++++++++++++++
~/test$ <8 at emperor:~/test$> clang malloc_pift.c
malloc_pift.c:7:20: error: illegal implicit cast between two pointers with
different address spaces
        int HEAP_2 *ptr = malloc(10 * sizeof (int));
                          ^~~~~~~~~~~~~~~~~~~~~~~~~
malloc_pift.c:7:20: warning: initializing 'void *' discards qualifiers,
expected 'int __attribute__((address_space(2))) *'
        int HEAP_2 *ptr = malloc(10 * sizeof (int));
                          ^~~~~~~~~~~~~~~~~~~~~~~~~
malloc_pift.c:8:13: error: illegal implicit cast between two pointers with
different address spaces
        if (ptr == NULL) {
                   ^~~~
/home/jcmartin78/llvm/Debug/lib/clang/1.1/include/stddef.h:38:14: note:
instantiated from:
#define NULL ((void*)0)
             ^~~~~~~~~~
malloc_pift.c:11:12: error: illegal implicit cast between two pointers with
different address spaces
                free(ptr);
                     ^~~
malloc_pift.c:11:12: warning: passing 'int __attribute__((address_space(2)))
*' discards qualifiers, expected 'void *'
                free(ptr);
                     ^~~
malloc_pift.c:12:13: error: illegal implicit cast between two pointers with
different address spaces
                ptr = NULL;
                      ^~~~
/home/jcmartin78/llvm/Debug/lib/clang/1.1/include/stddef.h:38:14: note:
instantiated from:
#define NULL ((void*)0)
             ^~~~~~~~~~
6 diagnostics generated.
++++++++++++++++++++++++++++++++++++++++++++++=
 Thanks in advance,

-- 
Juan Carlos
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