#include <string.h>

static void

bad_malloc(unsigned int size)

{

	fprintf(stderr, "fatal: could not malloc() %d bytes\n",

			(int) size);

	exit(1);

}

void *

emallocz(unsigned int size)

{

	void *res = calloc(1, size);

	if(!res)

		bad_malloc(size);

	return res;

}

void *

emalloc(unsigned int size)

{

	void *res = malloc(size);

	if(!res)

		bad_malloc(size);

	return res;

}

void *

erealloc(void *ptr, unsigned int size)

{

	void *res = realloc(ptr, size);

	if(!res)

		bad_malloc(size);

	return res;

}

char *

estrdup(const char *str)

{

	void *res = strdup(str);

	if(!res)

		bad_malloc(strlen(str));

	return res;

}

void

failed_assert(char *a, char *file, int line)

{

	fprintf(stderr, "Assertion \"%s\" failed at %s:%d\n", a, file, line);

	abort();

}

void

swap(void **p1, void **p2)

{

	void *tmp = *p1;

	*p1 = *p2;

	*p2 = tmp;

}