Gentoo is currently trying to rebuild the world with clang-16, uncovering exciting new errors in many packages since several warnings have been turned into errors, among them missing prototypes, as documented at: https://discourse.llvm.org/t/clang-16-notice-of-potentially-breaking-changes/65562 xfsprogs came up, with details at https://bugs.gentoo.org/875050. The problem was easy to find: a missing include for the u_init/u_cleanup prototypes. The error: Building scrub [CC] unicrash.o unicrash.c:746:2: error: call to undeclared function 'u_init'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] u_init(&uerr); ^ unicrash.c:746:2: note: did you mean 'u_digit'? /usr/include/unicode/uchar.h:4073:1: note: 'u_digit' declared here u_digit(UChar32 ch, int8_t radix); ^ unicrash.c:754:2: error: call to undeclared function 'u_cleanup'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] u_cleanup(); ^ 2 errors generated. The complaint is valid and the fix is easy enough: just add the missing include. Signed-off-by: Holger Hoffstätte <holger@xxxxxxxxxxxxxxxxxxxxxx> Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx> --- scrub/unicrash.c | 1 + 1 file changed, 1 insertion(+) diff --git a/scrub/unicrash.c b/scrub/unicrash.c index cb0880c1..24d4ea58 100644 --- a/scrub/unicrash.c +++ b/scrub/unicrash.c @@ -10,6 +10,7 @@ #include <sys/types.h> #include <sys/statvfs.h> #include <strings.h> +#include <unicode/uclean.h> #include <unicode/ustring.h> #include <unicode/unorm2.h> #include <unicode/uspoof.h> -- 2.39.0
