[Xapian-tickets] [Xapian] #665: Avoid C library functions not guaranteed to be thread-safe

[Xapian]

#665: Avoid C library functions not guaranteed to be thread-safe
-------------------------+--------------------------
 Reporter:  olly         |             Owner:  olly
     Type:  defect       |            Status:  new
 Priority:  normal       |         Milestone:  1.3.x
Component:  Library API  |           Version:  1.3.2
 Severity:  normal       |        Resolution:
 Keywords:               |        Blocked By:
 Blocking:               |  Operating System:  All
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Comment (by olly):

 POSIX requires that `readdir()` be thread-safe if the `DIR*` pointer is
 only used in a single thread, which is how we always use it:

 > The returned pointer, and pointers within the structure, might be
 invalidated or the structure or the storage areas might be overwritten by
 a subsequent call to readdir() on the same directory stream. '''They shall
 not be affected by a call to readdir() on a different directory stream.'''

 (my emphasis)

 http://pubs.opengroup.org/onlinepubs/9699919799/functions/readdir.html

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Ticket URL: <http://trac.xapian.org/ticket/665#comment:5>
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