/* $OpenBSD: etc.c,v 1.8 2019/12/17 17:16:32 guenther Exp $ */

/* Public Domain */

#include <sys/types.h>

#include <err.h>
#include <stdlib.h>
#include <string.h>
#include "ld.h"

#define OOM_MSG "Out of memory"

__dead void
_dl_oom(void)
{
        err(1, OOM_MSG);
}

char *
xstrdup(const char *s)
{
        char *ptr;

        if ((ptr = strdup(s)) == NULL)
                err(1, OOM_MSG);
        return (ptr);
}

void *
xmalloc(size_t size)
{
        void *ptr;

        if ((ptr = malloc(size)) == NULL)
                err(1, OOM_MSG);
        return (ptr);
}

void *
xrealloc(void *ptr, size_t size)
{
        void *nptr;

        if ((nptr = realloc(ptr, size)) == NULL)
                err(1, OOM_MSG);
        return (nptr);
}

void *
xcalloc(size_t nmemb, size_t size)
{
        void *ptr;

        ptr = calloc(nmemb, size);
        if (ptr == NULL)
                err(1, OOM_MSG);
        return ptr;
}

char *
concat(const char *s1, const char *s2, const char *s3)
{
        char *str;
        size_t len;

        len = strlen(s1) + strlen(s2) + strlen(s3) + 1;
        str = xmalloc(len);

        strlcpy(str, s1, len);
        strlcat(str, s2, len);
        strlcat(str, s3, len);

        return (str);
}