k0kubun	2018-02-07 00:19:10 +0900 (Wed, 07 Feb 2018)

  New Revision: 62258

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=62258

  Log:
    mjit.c: handle fopen error
    
    [Bug #14441]

  Modified files:
    trunk/mjit.c
Index: mjit.c
===================================================================
--- mjit.c	(revision 62257)
+++ mjit.c	(revision 62258)
@@ -91,6 +91,7 @@ https://github.com/ruby/ruby/blob/trunk/mjit.c#L91
 #include <sys/time.h>
 #include <dlfcn.h>
 #endif
+#include <errno.h>
 
 extern void rb_native_mutex_lock(rb_nativethread_lock_t *lock);
 extern void rb_native_mutex_unlock(rb_nativethread_lock_t *lock);
@@ -698,6 +699,11 @@ convert_unit_to_func(struct rb_mjit_unit https://github.com/ruby/ruby/blob/trunk/mjit.c#L699
     sprintf(funcname, "_mjit%d", unit->id);
 
     f = fopen(c_file, "w");
+    if (f == NULL) {
+        verbose(1, "Failed to fopen '%s', giving up JIT for it (%s)", c_file, strerror(errno));
+        return (mjit_func_t)NOT_COMPILABLE_JIT_ISEQ_FUNC;
+    }
+
     /* -include-pch is used for Clang */
     if (mjit_opts.cc == MJIT_CC_GCC) {
         const char *s = pch_file;

--
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