test/cfg: mitigated -Wimplicit-function-declaration compiler warnings on macOS

Author: firewave

test/cfg/gnu.c

@@ -57,6 +57,7 @@ int deallocuse_backtrace(int size) {
     return numEntries;
 }
 
+#if !defined(__APPLE__)
 void leakReturnValNotUsed_get_current_dir_name(void)
 {
     // cppcheck-suppress leakReturnValNotUsed
@@ -113,7 +114,6 @@ int nullPointer_gethostbyname_r(const char* name, struct hostent* ret, const cha
     return gethostbyname_r(name, ret, buf, buflen, result, h_errnop);
 }
 
-
 int nullPointer_gethostbyaddr_r(const void* addr, socklen_t len, int type, struct hostent* ret, const char* buf, size_t buflen, struct hostent** result, const int* h_errnop)
 {
     // cppcheck-suppress nullPointer
@@ -128,6 +128,7 @@ int nullPointer_gethostbyaddr_r(const void* addr, socklen_t len, int type, struc
     (void) gethostbyaddr_r(addr, len, type, ret, buf, buflen, result, NULL);
     return gethostbyaddr_r(addr, len, type, ret, buf, buflen, result, h_errnop);
 }
+#endif
 
 int nullPointer_getopt_long(int argc, char **argv, const char *optstring,
                             const struct option *longopts, int *longindex)
@@ -153,6 +154,7 @@ int nullPointer_getopt_long_only(int argc, char* const* argv, const char* optstr
     return getopt_long_only(argc, argv, optstring, longopts, longindex);
 }
 
+#if !defined(__APPLE__)
 int nullPointer_getservent_r(struct servent *restrict result_buf, const char *restrict buf, size_t buflen, struct servent **restrict result)
 {
     // cppcheck-suppress nullPointer
@@ -172,6 +174,7 @@ void *bufferAccessOutOfBounds_memrchr(const void *s, int c, size_t n)
     (void)memrchr(buf,c,43);
     return memrchr(s,c,n);
 }
+#endif
 
 void knownConditionTrueFalse_ffsl(long i)
 {
@@ -191,6 +194,7 @@ void knownConditionTrueFalse_ffsll(long long i)
     if (ffsll(i) == 0) {}
 }
 
+#if !defined(__APPLE__)
 int nullPointer_semtimedop(int semid, struct sembuf *sops, size_t nsops, const struct timespec *timeout)
 {
     (void) semtimedop(semid, sops, nsops, NULL); // If the timeout argument is NULL, then semtimedop() behaves exactly like semop().
@@ -226,8 +230,10 @@ int uninitvar_getpw(uid_t uid, char *buf)
     // cppcheck-suppress uninitvar
     return getpw(someUid, buf);
 }
+#endif
 
 // Declaration necessary because there is no specific / portable header.
+// https://www.eyrie.org/~eagle/software/rra-c-util/xmalloc.html
 extern void *xcalloc(size_t nmemb, size_t size);
 extern void *xmalloc(size_t size);
 extern void *xrealloc(void *block, size_t newsize);
@@ -293,8 +299,10 @@ void valid_code(int argInt1, va_list valist_arg, const int * parg)
 
     if (__builtin_expect(argInt1, 0)) {}
     if (__builtin_expect_with_probability(argInt1 + 1, 2, 0.5)) {}
+#ifdef __GLIBC__
     if (__glibc_unlikely(argInt1 != 0)) {}
     if (__glibc_likely(parg != NULL)) {}
+#endif
     const void *ax1 = __builtin_assume_aligned(parg, 16);
     printf("%p", ax1);
     const void *ax2 = __builtin_assume_aligned(parg, 32, 8);
@@ -482,6 +490,7 @@ void bufferAccessOutOfBounds()
     free(pAlloc2);
 }
 
+#if !defined(__APPLE__)
 void leakReturnValNotUsed()
 {
     // cppcheck-suppress [unreadVariable, constVariablePointer]
@@ -501,6 +510,7 @@ void leakReturnValNotUsed()
     if (42 == __builtin_expect(42, 0))
         return;
 }
+#endif
 
 #if !defined(__CYGWIN__) && !defined(__APPLE__)
 int nullPointer_epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)

test/cfg/posix.c

@@ -224,6 +224,7 @@ int nullPointer_getpwnam_r(const char *name, struct passwd *pwd, char *buffer, s
     return getpwnam_r(name, pwd, buffer, bufsize, result);
 }
 
+#if !defined(__APPLE__)
 int nullPointer_fgetpwent_r(FILE *restrict stream, const struct passwd *restrict pwbuf, char *restrict buf, size_t buflen, struct passwd **restrict pwbufp)
 {
     // cppcheck-suppress nullPointer
@@ -247,6 +248,7 @@ int nullPointer_getpwent_r(const struct passwd *restrict pwbuf, char *restrict b
     (void) getpwent_r(pwbuf, buf, buflen, NULL);
     return getpwent_r(pwbuf, buf, buflen, pwbufp);
 }
+#endif
 
 int nullPointer_getgrgid_r(gid_t gid, struct group *restrict grp, char *restrict buf, size_t buflen, struct group **restrict result)
 {

test/cfg/runtests.sh

@@ -44,7 +44,7 @@ CPPCHECK_OPT=(
 CXX=g++
 CXX_OPT=("-fsyntax-only" "-w" "-std=c++2a")
 CC=gcc
-CC_OPT=("-fsyntax-only" "-w" "-Wno-implicit-function-declaration" "-std=c11") # TODO: remove -Wno-implicit-function-declaration when warnings are fixed on MacOS
+CC_OPT=("-fsyntax-only" "-w" "-std=c11")
 
 function get_pkg_config_cflags {
     # TODO: get rid of the error enabling/disabling?