[RTEMS Project] #4390: Make zero size allocation result consistent across directives

[RTEMS trac]

#4390: Make zero size allocation result consistent across directives
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 Reporter:  Sebastian Huber  |       Owner:  Sebastian Huber
     Type:  enhancement      |      Status:  closed
 Priority:  normal           |   Milestone:  6.1
Component:  admin            |     Version:  6
 Severity:  normal           |  Resolution:  fixed
 Keywords:                   |  Blocked By:
 Blocking:                   |
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Comment (by Sebastian Huber <sebastian.huber@…>):

 In [changeset:"2c5199bb049efe8e29cd12461dc57bd6e30388e8/rtems"
 2c5199b/rtems]:
 {{{
 #!CommitTicketReference repository="rtems"
 revision="2c5199bb049efe8e29cd12461dc57bd6e30388e8"
 Return NULL for zero size allocations

 In POSIX, zero size memory allocations are implementation-defined
 behaviour.  The implementation has two options:

 https://pubs.opengroup.org/onlinepubs/9699919799/functions/malloc.html

 https://pubs.opengroup.org/onlinepubs/9699919799/functions/posix_memalign.html

 Linux and FreeBSD return a unique pointer for zero size memory
 allocations.   Return NULL on RTEMS to more likely catch the use of a
 zero size memory area by erroneous applications.

 Update #4390.
 }}}

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Ticket URL: <http://devel.rtems.org/ticket/4390#comment:5>
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