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-rw-r--r--test-suite/complexity/f_equal.v14
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diff --git a/test-suite/complexity/f_equal.v b/test-suite/complexity/f_equal.v
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+(* Checks that f_equal does not reduce the term uselessly *)
+(* Expected time < 1.00s *)
+
+Fixpoint stupid (n : nat) : unit :=
+match n with
+| 0 => tt
+| S n =>
+ let () := stupid n in
+ let () := stupid n in
+ tt
+end.
+
+Goal stupid 23 = stupid 23.
+Timeout 5 Time f_equal.