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Typechecker diverges on a stupid program #7424

vicuna opened this issue Nov 29, 2016 · 1 comment

Typechecker diverges on a stupid program #7424

vicuna opened this issue Nov 29, 2016 · 1 comment


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@vicuna vicuna commented Nov 29, 2016

Original bug ID: 7424
Reporter: @stedolan
Assigned to: @garrigue
Status: resolved (set by @garrigue on 2016-12-10T02:40:28Z)
Resolution: fixed
Priority: normal
Severity: minor
Version: 4.04.0
Fixed in version: 4.05.0 +dev/beta1/beta2/beta3/rc1
Category: typing
Monitored by: @gasche

Bug description

The following strange program causes the typechecker to loop infinitely:

type 'a b = B of 'a b b [@@unboxed]
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@vicuna vicuna commented Dec 10, 2016

Comment author: @garrigue

Fixed by commit 2608a18.
This was not a divergence, just the "fuel" given to the function was much too large.
Could also try to find a better termination criterion.

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