gnu.cfg: Added support for semtimedop().

cfg/gnu.cfg

@@ -92,6 +92,34 @@
       <valid>0:</valid>
     </arg>
   </function>
+  <!-- https://man7.org/linux/man-pages/man2/semop.2.html -->
+  <!-- int semtimedop(int semid, struct sembuf *sops, size_t nsops, const struct timespec *timeout); -->
+  <function name="semtimedop">
+    <noreturn>false</noreturn>
+    <returnValue type="int"/>
+    <use-retval/>
+    <leak-ignore/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+      <not-bool/>
+      <valid>0:</valid>
+    </arg>
+    <arg nr="2" direction="out">
+      <not-null/>
+      <not-uninit/>
+      <not-bool/>
+    </arg>
+    <arg nr="3" direction="in">
+      <not-uninit/>
+      <not-bool/>
+      <valid>0:</valid>
+    </arg>
+    <arg nr="4" direction="in">
+      <!--  If the timeout argument is NULL, then semtimedop() behaves exactly like semop() -->
+      <not-uninit/>
+      <not-bool/>
+    </arg>
+  </function>
   <!-- void * __builtin_assume_aligned (const void *exp, size_t align, ...) -->
   <!-- This function can have either two or three arguments, if it has three, the third argument should have integer type. -->
   <function name="__builtin_assume_aligned">

test/cfg/gnu.c

@@ -16,11 +16,20 @@
 #include <sys/types.h>
 #include <pwd.h>
 #include <sys/mman.h>
+#include <sys/sem.h>
 #include <wchar.h>
 #ifndef __CYGWIN__
 #include <sys/epoll.h>
 #endif
 
+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().
+    (void) semtimedop(semid, sops, nsops, timeout);
+    // cppcheck-suppress nullPointer
+    return semtimedop(semid, NULL, nsops, timeout);
+}
+
 void *nullPointer_mempcpy(void *dest, const void *src, size_t n)
 {
     // cppcheck-suppress nullPointer