84 	void *p = malloc(size);  in xmalloc()  local
85 	if (p)  in xmalloc()
86 		return p;  in xmalloc()
93 	void *p = calloc(nmemb, size);  in xcalloc()  local
94 	if (p)  in xcalloc()
95 		return p;  in xcalloc()
100 void *xrealloc(void *p, size_t size)  in xrealloc()  argument
102 	p = realloc(p, size);  in xrealloc()
103 	if (p)  in xrealloc()
104 		return p;  in xrealloc()
111 	char *p;  in xstrdup()  local
113 	p = strdup(s);  in xstrdup()
114 	if (p)  in xstrdup()
115 		return p;  in xstrdup()
122 	char *p;  in xstrndup()  local
124 	p = strndup(s, n);  in xstrndup()
125 	if (p)  in xstrndup()
126 		return p;  in xstrndup()