#ifdef __GNUC__
#define NORETURN __attribute__((__noreturn__))
#define NORETURN_PTR __attribute__((__noreturn__))
+#elif defined(_MSC_VER)
+#define NORETURN __declspec(noreturn)
+#define NORETURN_PTR
#else
#define NORETURN
#define NORETURN_PTR
extern char *xstrdup(const char *str);
extern void *xmalloc(size_t size);
+extern void *xmallocz(size_t size);
extern void *xmemdupz(const void *data, size_t len);
extern char *xstrndup(const char *str, size_t len);
extern void *xrealloc(void *ptr, size_t size);