[Numpy-svn] [numpy/numpy] c1a2a0: BUG: fix instability of structured dtype hash

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/numpy/numpy
  Commit: c1a2a0e583b5cd5e582c845717b1a2eb6bd0e194
      https://github.com/numpy/numpy/commit/c1a2a0e583b5cd5e582c845717b1a2eb6bd0e194
  Author: Antoine Pitrou <antoine at python.org>
  Date:   2015-04-23 (Thu, 23 Apr 2015)

  Changed paths:
    M numpy/core/src/multiarray/hashdescr.c

  Log Message:
  -----------
  BUG: fix instability of structured dtype hash

The hash value of a structured dtype was dependent on iteration order
of the fields mapping, which could make (in rare conditions) two
equal dtypes hash to different values.  We now consider the fields
in deterministic order, according to the names property.

Closes #5715.


  Commit: b635ba42007a69c8fa4dabb1e6668e26447e0fb3
      https://github.com/numpy/numpy/commit/b635ba42007a69c8fa4dabb1e6668e26447e0fb3
  Author: Jaime <jaime.frio at gmail.com>
  Date:   2015-04-23 (Thu, 23 Apr 2015)

  Changed paths:
    M numpy/core/src/multiarray/hashdescr.c

  Log Message:
  -----------
  Merge pull request #5786 from pitrou/record_dtype_hash

BUG: fix instability of structured dtype hash


Compare: https://github.com/numpy/numpy/compare/e1e05e12898c...b635ba42007a