+/* Duplicate a NUL-terminated string, exit on failure. */
+char *mh_xstrdup(const char *src)
+{
+ size_t n;
+ char *dest;
+
+ n = strlen(src) + 1; /* Ignore possibility of overflow. */
+ dest = mh_xmalloc(n);
+ memcpy(dest, src, n);
+
+ return dest;
+}
+