--- Libc/Libc-1158.1.2/stdlib/FreeBSD/system.c
+++ Libc/Libc-825.26/stdlib/FreeBSD/system.c
@@ -49,23 +49,20 @@
 #include <crt_externs.h>
 #define environ (*_NSGetEnviron())
 
-#include <TargetConditionals.h>
-
 #if __DARWIN_UNIX03
 #include <pthread.h>
 
 static pthread_mutex_t __systemfn_mutex = PTHREAD_MUTEX_INITIALIZER;
 extern int __unix_conforming;
+#ifdef VARIANT_CANCELABLE
+extern void _pthread_testcancel(pthread_t thread, int isconforming);
+#endif /* VARIANT_CANCELABLE */
 #endif /* __DARWIN_UNIX03 */
 
 int
 __system(command)
 	const char *command;
 {
-#if TARGET_OS_IPHONE && (TARGET_OS_SIMULATOR || !TARGET_OS_IOS)
-	// Don't abort() on iOS for now
-	LIBC_ABORT("system() is not supported on this platform.");
-#else
 	pid_t pid, savedpid;
 	int pstat, err;
 	struct sigaction ign, intact, quitact;
@@ -78,7 +75,7 @@
 	if (__unix_conforming == 0)
 		__unix_conforming = 1;
 #ifdef VARIANT_CANCELABLE
-	pthread_testcancel();
+	_pthread_testcancel(pthread_self(), 1);
 #endif /* VARIANT_CANCELABLE */
 #endif /* __DARWIN_UNIX03 */
 
@@ -145,7 +142,6 @@
 	pthread_mutex_unlock(&__systemfn_mutex);
 #endif /* __DARWIN_UNIX03 */
 	return(pstat);
-#endif /* TARGET_OS_IPHONE && (TARGET_OS_SIMULATOR || !TARGET_OS_IOS) */
 }
 
 __weak_reference(__system, system);