[GHC] #10554: Replacing existing attachment with the same name doesn't work

[GHC]

#10554: Replacing existing attachment with the same name doesn't work
-------------------------------------+-------------------------------------
        Reporter:  thomie            |                   Owner:  hvr
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Trac & Git        |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:  #9675             |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by thomie):

 * related:   => #9675


Old description:



New description:

 To reproduce:
   * download `T9675-max_bytes_used.2.png`
   * notice that it says `+RTS` in the legend
   * rename the file to `T9675-max_bytes_used.png`
   * add it as an attachment to this ticket, clicking "Replace existing
 attachment of the same name"
   * notice that the file `T9675-max_bytes_used.png`
 [https://ghc.haskell.org/trac/ghc/attachment/ticket/10554/T9675-max_bytes_used.png
 attached] to this ticket is still the old version, without the `+RTS` in
 the legend

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10554#comment:1>
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