[FFmpeg-devel] [PATCH] fix for roundup issue 2127

Daniel Kang daniel.d.kang
Sat Jan 1 20:33:04 CET 2011

On Sat, Jan 1, 2011 at 2:21 PM, Reimar D?ffinger
<Reimar.Doeffinger at gmx.de>wrote:
> I understand that you need to change the type of the function parameters,
> but if you also need to cast the function arguments where the function is
> called that would be such a gigantic compiler bug I can't imagine that is
> really the case.
> Also at least for gcc you can just cast the variables in the constraints,
> but I think clang or lock have issues with that...

I'm not sure what you mean by "such a gigantic compiler bug". All the
bugs are the same, which is essentially mixing 32- and 64-bit registers
for addressing is illegal. Maybe I didn't clarify how I got the compiler
messages. If the transpose4x4 function arguments are changed back "int"
and there is no casting in the call, then the errors are generated.

I added the casts because I thought it is clearer this way. Removing the
casts but keeping the transpose4x4 function arguments the same does not
give the errors. Should I do this instead?

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