xmalloc.h

#ifndef _XMALLOC_H
#define _XMALLOC_H 1

#include <stdio.h>
#include <stdlib.h>

__attribute__ ((noreturn, unused)) static void out_of_memory(void) {
    fprintf(stderr,"out of memory\n");
    abort();
}

__attribute__ ((unused)) static void *xmalloc(size_t size) {
    void *ptr = malloc(size);
    if (ptr == NULL)
        out_of_memory();
    return(ptr);
}

__attribute__ ((unused)) static void *xrealloc(void *ptr, size_t size) {
    void *outptr = realloc(ptr, size);
    if (outptr == NULL)
        out_of_memory();
    return(outptr);
}

__attribute__ ((unused)) static char *xstrndup(const char *s, size_t n) {
    char *ptr = strndup(s, n);
    if (ptr == NULL)
        out_of_memory();
    return(ptr);
}

#endif