[FFmpeg-trac] #3970(build system:new): configure should warn about gcc 4.2

[FFmpeg]

#3970: configure should warn about gcc 4.2
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             Reporter:  cehoyos      |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:  build
              Version:  git-master   |  system
             Keywords:  gcc          |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by gajjanag):

 Even if we can track down which commit in GCC fixed this, we don't know
 which distributions patched their compilers appropriately. If we knew
 exactly which commit in GCC introduced the regression and which one fixed
 it, we could report that in our warning message. I am not sure that it is
 all worth it. Warning for 4.2 should be enough; after all we do not error
 out, and the users should expect potential trouble. I think the false
 positive warnings are thus acceptable for the time being.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3970#comment:6>
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