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authorMartin Storsjö <martin@martin.st>2016-08-01 09:07:48 +0300
committerMartin Storsjö <martin@martin.st>2016-08-02 11:32:35 +0300
commit230b1c070baa3b6d4bd590426a365b843d60ff50 (patch)
treeb4303ae76f1200b806bf248f0d417683db7be2fc /avconv.h
parent014773b66bdff4de24f384066d1a85d2a5bb6774 (diff)
downloadffmpeg-230b1c070baa3b6d4bd590426a365b843d60ff50.tar.gz
intreadwrite: Add intermediate variables in the byteswise AV_W*() macros
This avoids issues with expanding the argument multiple times, and makes sure that it is of the right type for the following shifts. Even if the caller of a macro could be expected not to pass parameters that have side effects if expanded multiple times, these fallback codepaths are rarely, if ever, tested, so it is expected that such issues can arise. Thefore, for safety, make sure the fallback codepaths only expand the arguments once. Signed-off-by: Martin Storsjö <martin@martin.st>
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