IOS build fix.

system call is disabled on this platform.

include/afl-fuzz.h

@@ -96,6 +96,10 @@
 #endif
 #endif                                                         /* __linux__ */
 
+#ifdef __APPLE__
+#include <TargetConditionals.h>
+#endif
+
 #ifndef SIMPLE_FILES
 #define CASE_PREFIX "id:"
 #else

src/afl-fuzz-bitmap.c

@@ -683,12 +683,16 @@ u8 save_if_interesting(char** argv, void* mem, u32 len, u8 fault) {
 #endif                                                    /* ^!SIMPLE_FILES */
 
       ++unique_crashes;
-
-      if (infoexec)  // if the user wants to be informed on new crashes - do
+      if (infoexec) {  // if the user wants to be informed on new crashes - do
+#if !TARGET_OS_IPHONE
                      // that
         if (system(infoexec) == -1)
           hnb += 0;  // we dont care if system errors, but we dont want a
                      // compiler warning either
+#else
+        WARNF("command execution unsupported");
+#endif
+      }
 
       last_crash_time = get_cur_time();
       last_crash_execs = total_execs;

src/afl-fuzz-init.c

@@ -1426,6 +1426,7 @@ void check_crash_handling(void) {
      until I get a box to test the code. So, for now, we check for crash
      reporting the awful way. */
 
+#if !TARGET_OS_IPHONE
   if (system("launchctl list 2>/dev/null | grep -q '\\.ReportCrash$'")) return;
 
   SAYF(
@@ -1443,6 +1444,7 @@ void check_crash_handling(void) {
       "    launchctl unload -w ${SL}/LaunchAgents/${PL}.plist\n"
       "    sudo launchctl unload -w ${SL}/LaunchDaemons/${PL}.Root.plist\n");
 
+#endif
   if (!getenv("AFL_I_DONT_CARE_ABOUT_MISSING_CRASHES"))
     FATAL("Crash reporter detected");