[FFmpeg-devel] [PATCH] avcodec/fft_template: Fix multiple runtime error: signed integer overflow: -1943918714 - 1935113003 cannot be represented in type 'int'

Paul B Mahol onemda at gmail.com
Fri Jun 9 19:12:22 EEST 2017

On 6/9/17, wm4 <nfxjfg at googlemail.com> wrote:
> On Fri, 9 Jun 2017 11:34:26 +0300
> Ivan Kalvachev <ikalvachev at gmail.com> wrote:
>> If I understand correctly, the root of the problem is the undefined
>> behavior
>> of the compiler and the C standard.
>> Is there any chance that FFmpeg project could initiate a change in the
>> next C standard, so this thing would be defined?
>> (and I guess, also define a few other similar things, like signed
>> right shift, etc...)
>> It is a matter of fact, that a lot of compiler-defined-things have
>> been implemented in
>> certain ways on most compilers and that there are plenty of programs
>> depend on these
>> specific implementations and break when a new compiler does things
>> differently
>> (clang had nice article about it).
>> About the typedef, is SUINT a standard defined type for workarounding
>> this specific problem?
>> I do suspect that some of our fellow developers simply find its name ugly.
>> Maybe they would be more welcoming if
>> "suint32_t" like typedef is used?
> This thing is brain dead - not even the post year 2000 C committee
> would accept it.

Also please stop spreading hacks to overcome various "timeouts" from those

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