[Bug 1209326] Re: SRU micro-release (MRE) 3.10.3 from utopic to trusty - calculator fails to do proper calculatoins after CTRL+Z and Enter

[Chris Malton]

Now in on https://launchpad.net/~chrism-u/+archive/ubuntu/ppa

@Sebastien - please could you review?

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https://bugs.launchpad.net/bugs/1209326

Title:
  SRU micro-release (MRE) 3.10.3 from utopic to trusty - calculator
  fails to do proper calculatoins after CTRL+Z and Enter

Status in GNOME Calculator:
  Fix Released
Status in “gnome-calculator” package in Ubuntu:
  Fix Released
Status in “gnome-calculator” source package in Trusty:
  Triaged

Bug description:
  Micro-release 3.10.3 in utopic fixes Bug #1209326 and Bug #1362919.

  The update fixes these issues:
      * Fix crash on super/subscript buttons
      * Fix previous answer on undo --> (Bug #1209326)
      * Fix segfault on repeated undo
      * Update translation

  I've backported the package from utopic to trusty without any changes
  to my PPA
  https://launchpad.net/~amribrahim1987/+archive/ubuntu/ppa/+packages?field.name_filter
  =gnome-calculator&field.status_filter=published&field.series_filter=

  I've attached a diff file. Please test and SRU to trusty.

  [Impact]

  This bug gives wrong results when undo is used.

  [Test Case]

  1. Open calculator and type "5000/60" followed by <Enter>. The
  calculator produces the right answer, 83.333...

  2. Type "/60" followed by <Enter> to divide by 60 again. The
  calculator again produces the right answer, 1.388...

  3. Press <ctrl>-Z to undo the last calculation.

  4. Press <backspace> twice to delete the last "60".

  5. Type "12" followed by <Enter>, to divide by 12 instead.

  The calculator gives the wrong answer.

  [Regression Potential]

  The fixes themselves could introduce new bugs.

  -----------------------------------------------------------------------------

  I found this bug trying to redo a calculation. Do a calculation maybe
  with decimals like I did and then press CTRL+Z and hit enter and you
  should see the bug.

  It's making a bad calculation after these steps.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: gnome-calculator 1:3.8.1-0ubuntu1
  Uname: Linux 3.10.2-031002-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.1
  Architecture: amd64
  Date: Wed Aug  7 13:08:05 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-07-10 (28 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MarkForUpload: True
  SourcePackage: gnome-calculator
  UpgradeStatus: No upgrade log present (probably fresh install)

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