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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static void
oom_error(const char *func)
{
fprintf(stderr, "fatal error in %s: out of memory\n", func);
// Prefer abort() over exit(1) for better debuggability.
abort();
}
char*
xstrdup(const char *s)
{
char *p = strdup(s);
if (p == NULL) oom_error(__func__);
return p;
}
void*
xmalloc(size_t size)
{
void *p = malloc(size);
if (p == NULL) oom_error(__func__);
return p;
}
void*
xcalloc(size_t nmemb, size_t size)
{
void *p = calloc(nmemb, size);
if (p == NULL) oom_error(__func__);
return p;
}
void*
xrealloc(void *ptr, size_t size)
{
void *p = realloc(ptr, size);
if (p == NULL) oom_error(__func__);
return p;
}
void*
xreallocarray(void *ptr, size_t nmemb, size_t size)
{
size_t alloc_size;
void *p;
if (__builtin_mul_overflow(nmemb, size, &alloc_size))
oom_error(__func__);
p = realloc(ptr, alloc_size);
if (p == NULL) oom_error(__func__);
return p;
}
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