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Explanation of total of Hashtbl.hash_param is not right. #6869

vicuna opened this issue May 14, 2015 · 1 comment


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commented May 14, 2015

Original bug ID: 6869
Reporter: furuse
Assigned to: @mshinwell
Status: closed (set by @xavierleroy on 2016-12-07T10:49:22Z)
Resolution: fixed
Priority: normal
Severity: major
Version: 4.02.1
Fixed in version: 4.02.2+dev / +rc1
Category: standard library
Monitored by: @gasche

Bug description

hashtbl.mli says about Hashtbl.hash_param:

Hashing performs a breadth-first, left-to-right traversal
of the structure [x], stopping after [meaningful] meaningful nodes
were encountered, or [total] nodes (meaningful or not) were

The value of [total] is actually capped to HASH_QUEUE_SIZE=256 in byterun/hash.c therefore specifying larger than 256 is equivalent with 256. This should be noted in the comment.


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commented May 19, 2015

Comment author: @mshinwell

Fixed in 4.02

@vicuna vicuna closed this Dec 7, 2016

@vicuna vicuna added the stdlib label Mar 14, 2019

@vicuna vicuna added the bug label Mar 20, 2019

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