mame	2018-08-03 14:11:20 +0900 (Fri, 03 Aug 2018)

  New Revision: 64166

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=64166

  Log:
    thread_pthread.c: add a macro guard for PTHREAD_CANCEL_ENABLE
    
    It seems to be unavailable on some platforms including my Android phone.

  Modified files:
    trunk/thread_pthread.c
Index: thread_pthread.c
===================================================================
--- thread_pthread.c	(revision 64165)
+++ thread_pthread.c	(revision 64166)
@@ -1551,9 +1551,11 @@ mjit_worker(void *arg) https://github.com/ruby/ruby/blob/trunk/thread_pthread.c#L1551
 {
     void (*worker_func)(void) = (void(*)(void))arg;
 
+#ifdef PTHREAD_CANCEL_ENABLE
     if (pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0) {
         fprintf(stderr, "Cannot enable cancellation in MJIT worker\n");
     }
+#endif
 #ifdef SET_CURRENT_THREAD_NAME
     SET_CURRENT_THREAD_NAME("ruby-mjitworker"); /* 16 byte including NUL */
 #endif

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