use _s functions and add functions for ctime and localtime

Author: Зишан Мирза

clang-tools-extra/test/clang-tidy/checkers/bugprone/unsafe-functions.c

@@ -109,13 +109,23 @@ struct tm *localtime(const struct tm *tm);
 
 void f4(const time_t *Timer) {
   ctime(Timer);
-  // CHECK-MESSAGES-WITH-ANNEX-K:           :[[@LINE-1]]:3: warning: function 'ctime' is not bounds-checking and non-reentrant; 'ctime_r' should be used instead
-  // CHECK-MESSAGES-WITH-ANNEX-K-CERT-ONLY: :[[@LINE-2]]:3: warning: function 'ctime' is not bounds-checking and non-reentrant; 'ctime_r' should be used instead
+  // CHECK-MESSAGES-WITH-ANNEX-K:           :[[@LINE-1]]:3: warning: function 'ctime' is not bounds-checking and non-reentrant; 'ctime_s' should be used instead
+  // CHECK-MESSAGES-WITH-ANNEX-K-CERT-ONLY: :[[@LINE-2]]:3: warning: function 'ctime' is not bounds-checking and non-reentrant; 'ctime_s' should be used instead
   // no-warning WITHOUT-ANNEX-K
 
   localtime(Timer);
-  // CHECK-MESSAGES-WITH-ANNEX-K:           :[[@LINE-1]]:3: warning: function 'localtime' is not bounds-checking and non-reentrant; 'localtime_r' should be used instead
-  // CHECK-MESSAGES-WITH-ANNEX-K-CERT-ONLY: :[[@LINE-2]]:3: warning: function 'localtime' is not bounds-checking and non-reentrant; 'localtime_r' should be used instead
+  // CHECK-MESSAGES-WITH-ANNEX-K:           :[[@LINE-1]]:3: warning: function 'localtime' is not bounds-checking and non-reentrant; 'localtime_s' should be used instead
+  // CHECK-MESSAGES-WITH-ANNEX-K-CERT-ONLY: :[[@LINE-2]]:3: warning: function 'localtime' is not bounds-checking and non-reentrant; 'localtime_s' should be used instead
+  // no-warning WITHOUT-ANNEX-K
+
+  char *(*F4)(const struct tm *) = &ctime;
+  // CHECK-MESSAGES-WITH-ANNEX-K:           :[[@LINE-1]]:37: warning: function 'ctime' is not bounds-checking and non-reentrant; 'ctime_s' should be used instead
+  // CHECK-MESSAGES-WITH-ANNEX-K-CERT-ONLY: :[[@LINE-2]]:37: warning: function 'ctime' is not bounds-checking and non-reentrant; 'ctime_s' should be used instead
+  // no-warning WITHOUT-ANNEX-K
+
+  struct tm *(*F4)(const struct tm *) = &localtime;
+  // CHECK-MESSAGES-WITH-ANNEX-K:           :[[@LINE-1]]:37: warning: function 'localtime' is not bounds-checking and non-reentrant; 'localtime_s' should be used instead
+  // CHECK-MESSAGES-WITH-ANNEX-K-CERT-ONLY: :[[@LINE-2]]:37: warning: function 'localtime' is not bounds-checking and non-reentrant; 'localtime_s' should be used instead
   // no-warning WITHOUT-ANNEX-K
 }