--- a/src/HOL/Tools/Quickcheck/narrowing_generators.ML Sun Mar 13 19:16:19 2011 +0100
+++ b/src/HOL/Tools/Quickcheck/narrowing_generators.ML Sun Mar 13 19:27:39 2011 +0100
@@ -43,7 +43,7 @@
val _ = File.write narrowing_engine_file narrowing_engine
val _ = File.write main_file main
val executable = File.shell_path (Path.append in_path (Path.basic "isa_lsc"))
- val cmd = "\"$ISABELLE_GHC\" -fglasgow-exts " ^
+ val cmd = "exec \"$ISABELLE_GHC\" -fglasgow-exts " ^
(space_implode " " (map File.shell_path [code_file, narrowing_engine_file, main_file])) ^
" -o " ^ executable ^ " && " ^ executable
in