mark unused parameters in trivial compat functions

When a platform feature isn't available or in use, we sometimes conditionally compile empty or trivial functions to turn these into noops. We need to annotate their parameters so that -Wunused-parameters won't complain about them. Note that there are many more of these in compat/mingw.h, but we'll leave them for now, as there's some trickery required to get the UNUSED macro available there. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jeff King committed Oct 17, 2022 at 21:05 UTC 808e91956d1db707643c7f68c2b8fcc6f38a2d80
3 files changed +12 -8
compat/nonblock.c
+1 -1
@@ -41,7 +41,7 @@ int enable_pipe_nonblock(int fd)
41
42 #else
43
44 -int enable_pipe_nonblock(int fd)
44 +int enable_pipe_nonblock(int fd UNUSED)
45 {
46 errno = ENOSYS;
47 return -1;
exec-cmd.c
+1 -1
@@ -252,7 +252,7 @@ static const char *system_prefix(void)
252 * This is called during initialization, but No work needs to be done here when
253 * runtime prefix is not being used.
254 */
255 -void git_resolve_executable_dir(const char *argv0)
255 +void git_resolve_executable_dir(const char *argv0 UNUSED)
256 {
257 }
258
git-compat-util.h
+10 -6
@@ -310,7 +310,9 @@ typedef unsigned long uintptr_t;
310 #ifdef PRECOMPOSE_UNICODE
311 #include "compat/precompose_utf8.h"
312 #else
313 -static inline const char *precompose_argv_prefix(int argc, const char **argv, const char *prefix)
313 +static inline const char *precompose_argv_prefix(int argc UNUSED,
314 + const char **argv UNUSED,
315 + const char *prefix)
316 {
317 return prefix;
318 }
@@ -335,7 +337,9 @@ struct itimerval {
337 #endif
338
339 #ifdef NO_SETITIMER
338 -static inline int setitimer(int which, const struct itimerval *value, struct itimerval *newvalue) {
340 +static inline int setitimer(int which UNUSED,
341 + const struct itimerval *value UNUSED,
342 + struct itimerval *newvalue UNUSED) {
343 return 0; /* pretend success */
344 }
345 #endif
@@ -420,7 +424,7 @@ int lstat_cache_aware_rmdir(const char *path);
424 #endif
425
426 #ifndef has_dos_drive_prefix
423 -static inline int git_has_dos_drive_prefix(const char *path)
427 +static inline int git_has_dos_drive_prefix(const char *path UNUSED)
428 {
429 return 0;
430 }
@@ -428,7 +432,7 @@ static inline int git_has_dos_drive_prefix(const char *path)
432 #endif
433
434 #ifndef skip_dos_drive_prefix
431 -static inline int git_skip_dos_drive_prefix(char **path)
435 +static inline int git_skip_dos_drive_prefix(char **path UNUSED)
436 {
437 return 0;
438 }
@@ -1463,11 +1467,11 @@ int open_nofollow(const char *path, int flags);
1467 #endif
1468
1469 #ifndef _POSIX_THREAD_SAFE_FUNCTIONS
1466 -static inline void flockfile(FILE *fh)
1470 +static inline void flockfile(FILE *fh UNUSED)
1471 {
1472 ; /* nothing */
1473 }
1470 -static inline void funlockfile(FILE *fh)
1474 +static inline void funlockfile(FILE *fh UNUSED)
1475 {
1476 ; /* nothing */
1477 }