[Xapian-tickets] [Xapian] #687: 64 bit docid follow-on

[Xapian]

#687: 64 bit docid follow-on
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 Reporter:  olly         |             Owner:  olly
     Type:  defect       |            Status:  assigned
 Priority:  normal       |         Milestone:  1.4.x
Component:  Library API  |           Version:  SVN trunk
 Severity:  normal       |        Resolution:
 Keywords:               |        Blocked By:
 Blocking:               |  Operating System:  All
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Changes (by olly):

 * milestone:  1.3.5 => 1.4.x


Comment:

 On further reflection, I think we punt on this for 1.4.0 - 64 bit docids
 aren't the default, so you're choosing an ABI-incompatible build to start
 with.

 It's also going to be significant work to check the consequences for all
 the languages we have bindings for.  E.g. it looks like PHP's integer type
 can be 32 or 64 bits depending on the platform (I guess it maps to C
 `long`), and large values quietly turn into a floating point value (which
 presumably means that where PHP has a 32-bit integer type, integer values
 are effectively precisely representable up to where C `double` stops being
 able to represent consecutive integers).  This all needs careful research
 (or existing in-depth knowledge), and careful construction of tests cases.

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Ticket URL: <http://trac.xapian.org/ticket/687#comment:3>
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