--- a/src/Pure/ML/ml_process.scala Wed Jan 02 20:20:01 2019 +0100
+++ b/src/Pure/ML/ml_process.scala Wed Jan 02 21:18:35 2019 +0100
@@ -88,7 +88,7 @@
// options
val isabelle_process_options = Isabelle_System.tmp_file("options")
- Isabelle_System.bash("chmod 600 " + File.bash_path(File.path(isabelle_process_options)))
+ Isabelle_System.bash("chmod 600 " + File.bash_path(File.path(isabelle_process_options))).check
File.write(isabelle_process_options, YXML.string_of_body(options.encode))
val env_options = Map("ISABELLE_PROCESS_OPTIONS" -> File.standard_path(isabelle_process_options))
val eval_options = if (heaps.isEmpty) Nil else List("Options.load_default ()")