From 1a64f842ef69e359c529d08ad553a3d411e22f59 Mon Sep 17 00:00:00 2001
From: k0kubun <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 6 Feb 2018 15:19:10 +0000
Subject: [PATCH] mjit.c: handle fopen error

[Bug #14441]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62258 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 mjit.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/mjit.c b/mjit.c
index 0bb50aecd9..3bf82f7529 100644
--- a/mjit.c
+++ b/mjit.c
@@ -91,6 +91,7 @@
 #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 *unit)
     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;