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Fixed simple-contract stronger check.

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svn: r17752
This commit is contained in:
Carl Eastlund 2010-01-19 09:28:08 +00:00
parent 6a0469b680
commit 51983e3829
1 changed files with 6 additions and 1 deletions
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7
collects/scheme/contract/private/prop.ss
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@ -177,10 +177,15 @@
(let* ([name (or name default-name)]
[first-order (or first-order any?)]
[projection (or projection (first-order-projection name first-order))]
[stronger (or stronger weakest)])
[stronger (or stronger as-strong?)])
(mk name first-order projection stronger)))
(define (as-strong? a b)
(procedure-closure-contents-eq?
(contract-struct-projection a)
(contract-struct-projection b)))
(define simple-contract
(build-contract make-simple-contract 'simple-contract))