Unable to free const pointers in C

Question

How can I free a const char*? I allocated new memory using malloc, and when I\'m trying to free it I always receive the error \"incompatible pointe

Answer 1

It makes no sense to malloc a pointer to const, since you will not be able to modify its contents (without ugly hacks).

FWIW though, gcc just gives a warning for the following:

//
// const.c
//

#include 
#include 

int main(void)
{
    const char *p = malloc(100);

    free(p);
    return 0;
}

$ gcc -Wall const.c -o const
const.c: In function ‘main’:
const.c:8: warning: passing argument 1 of ‘free’ discards qualifiers from pointer target type
$ 

What compiler are you using ?