[Bug 1315888] Re: Zlib functions (gzopen etc.) are undefined while gzopen64 etc. exist

[Michael Terry]

Nish, since you are busy, and your patch seems fine, I've uploaded it to
trusty for ya.  Thanks for the patch!

** Changed in: php5 (Ubuntu Trusty)
       Status: Confirmed => In Progress

** Changed in: php5 (Ubuntu)
       Status: In Progress => Invalid

** Changed in: phpmyadmin (Ubuntu)
       Status: Confirmed => Invalid

** Changed in: phpmyadmin (Ubuntu Trusty)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1315888

Title:
  Zlib functions (gzopen etc.) are undefined while gzopen64 etc. exist

Status in php:
  Unknown
Status in WordPress:
  New
Status in php5 package in Ubuntu:
  Invalid
Status in phpmyadmin package in Ubuntu:
  Invalid
Status in php5 source package in Trusty:
  In Progress
Status in phpmyadmin source package in Trusty:
  Invalid

Bug description:
  After upgrading to 14.04, all function Zlib-related function calls
  (gzopen() etc) fail with "Fatal error: Call to undefined function
  gzopen() in ...". Function names with 64 added to the end to them
  (gzopen64() etc) work as expected.

  Distribution: 14.04 - 32bit version
  Actual package versions: 5.5.9+dfsg-1ubuntu4

  [Impact]
  After upgrading to 14.04, all function Zlib-related function calls (gzopen() etc) fail with "Fatal error: Call to undefined function gzopen() in ...". Function names with 64 added to the end to them (gzopen64() etc) work as expected.

  By #undef-ing the zlib-related function calls, the internal rename to
  *64() does not occur in PHP5.

  [Test Case]
  On a i386 system:

  php -r 'var_dump(function_exists("gzopen"));

  Before:
  bool(false)

  After:
  bool(true)

  [Regression Potential]
  The only source of potential regression is if, as a workaround, an end-user modified their code on i386 to use the *64() APIs that were now exposed. This should not be common, and was not done in any official Ubuntu packages.

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