Comment 17 for bug 1017192

Since the upstream bug is closed, let's track the upstream fix here (revnos for Oracle 5.6 tree):

    ------------------------------------------------------------
    revno: 5010.1.6
    committer: Tor Didriksen <email address hidden>
    branch nick: 5.6-review
    timestamp: Thu 2013-04-11 13:53:51 +0200
    message:
      Bug#16051728 SERVER CRASHES IN ADD_IDENTIFIER ON CONCURRENT ALTER TABLE

      Post push fix: do not include mytap header,
      the declarations there may break other code.

      Also: CHECK_CXX_COMPILER_FLAG rather than CHECK_C_COMPILER_FLAG for -Wno-null-dereference
------------------------------------------------------------
revno: 4936
committer: Tor Didriksen <email address hidden>
branch nick: 5.6
timestamp: Thu 2013-03-21 18:26:13 +0100
message:
  Bug#16051728 SERVER CRASHES IN ADD_IDENTIFIER ON CONCURRENT ALTER TABLE

  Post push fix: the unit test broke merge_large_tests-t
  since it redefined some global settings.

  Also: no underscores in test names or test case names.
    ------------------------------------------------------------
    revno: 2875.437.26
    committer: Annamalai Gurusami <email address hidden>
    branch nick: mysql-5.5
    timestamp: Thu 2013-03-21 11:40:43 +0530
    message:
      Bug #16051728 SERVER CRASHES IN ADD_IDENTIFIER ON CONCURRENT ALTER TABLE AND
      SHOW ENGINE INNOD

      Problem:

      The purpose of explain_filename() is to provide useful additional
      information regarding the partitions given the filename. This function
      was returning an error when it was not able to parse the given filename.
      For example, within InnoDB, temporary files are created with #sql-
      prefix. But this function was not able to parse it correctly.

      Solution:

      It is not an error, if explain_filename() could not parse the given
      filename. If there is no partition information to explain, then silently
      return from the function.

      rb#1940 approved by mattiasj