1 Extended malloc attributes are available since gcc 11.
2 --- whois/utils.h.orig 2023-10-08 22:58:33.000000000 +0200
3 +++ whois/utils.h 2023-10-21 17:56:23.225691505 +0200
5 /* Portability macros */
7 # define NORETURN __attribute__((noreturn))
9 # define MALLOC_FREE __attribute__((malloc(free)))
13 # define NONNULL __attribute__((returns_nonnull))