[FFmpeg-devel] Regression tests fail on MinGW

[Ramiro Polla]

Ramiro Polla wrote:
> Hello,
> 
> Regression tests fail on MinGW since r11142. I've been procrastinating 
> to find the cause for an incredible amount of time.
> 
> The problem is that strtod() on Windows doesn't like hex strings. When 
> av_get_string() was used instead of av_get_double(), it would pass hex 
> strings to av_set_string() (which uses av_strtod(), which uses strtod()) 
> for FF_OPT_TYPE_FLAGS. So -flags +bitexact wasn't doing anything, and 
> hence the tests fail.
> 
> This should be fixed on MinGW, and I sent a message about it on [0].

MinGW exports a C99-compliant version of strtod, but it has two 
underscores before the name. Attached patch can be used by MinGW users 
for the moment for mingw-runtime-3.14 before it is fixed in their end.

Ramiro Polla
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