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-rw-r--r--testsuite/tests/typing-extensions/cast.ml2
1 files changed, 2 insertions, 0 deletions
diff --git a/testsuite/tests/typing-extensions/cast.ml b/testsuite/tests/typing-extensions/cast.ml
index 855f4df76c..1efcfd5090 100644
--- a/testsuite/tests/typing-extensions/cast.ml
+++ b/testsuite/tests/typing-extensions/cast.ml
@@ -1,3 +1,5 @@
+(* Ignore OCAMLRUNPARAM=b to be reproducible *)
+Printexc.record_backtrace false;;
(* By using two types we can have a recursive constraint *)
type 'a class_name = .. constraint 'a = < cast: 'a. 'a name -> 'a; ..>