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author | 2013-01-28 18:02:02 +0000 | |
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committer | 2013-01-28 18:02:02 +0000 | |
commit | 5e8824960f68f529869ac299b030282cc916ba2c (patch) | |
tree | 522a6274cc117a8e11e59f978cd02b2cbc155619 /test-suite/bugs/closed/2830.v | |
parent | 903360f4614f2e49286b2fe3b13a37b3539e31e7 (diff) |
Fixing one part of #2830 (anomaly "defined twice" due to nested calls to
the function solve_candidates introduced in 8.4).
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16163 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'test-suite/bugs/closed/2830.v')
-rw-r--r-- | test-suite/bugs/closed/2830.v | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/2830.v b/test-suite/bugs/closed/2830.v new file mode 100644 index 000000000..2daff6123 --- /dev/null +++ b/test-suite/bugs/closed/2830.v @@ -0,0 +1,30 @@ +Set Implicit Arguments. + +Inductive Bit := O | I. + +Inductive BitString: nat -> Set := +| bit: Bit -> BitString 0 +| bitStr: forall n: nat, Bit -> BitString n -> BitString (S n). + +Definition BitOr (a b: Bit) := + match a, b with + | O, O => O + | _, _ => I + end. + +(* Should fail with an error; used to failed in 8.4 and trunk with + anomaly Evd.define: cannot define an evar twice *) + +Fail Fixpoint StringOr (n m: nat) (a: BitString n) (b: BitString m) := + match a with + | bit a' => + match b with + | bit b' => bit (BitOr a' b') + | bitStr b' bT => bitStr b' (StringOr (bit a') bT) + end + | bitStr a' aT => + match b with + | bit b' => bitStr a' (StringOr aT (bit b')) + | bitStr b' bT => bitStr (BitOr a' b') (StringOr aT bT) + end + end. |