[Libav-user] g++ 4.7.2 fails to compile av_err2str

"René J.V. Bertin" rjvbertin at gmail.com
Mon Jan 14 12:31:30 CET 2013

On Jan 14, 2013, at 11:42, Alex Cohn wrote:
>> used later on. Semantics imposed by C++?
>> R.
> An easy test proves that adding "-x c" to command line resolves the
> problem. So it is a C++ artifact.

As I feared. 

Note that the OP's tst_gxx.cpp does a simple

i.e. stand-alone instead of using the function call as an argument to another function as is stipulated in the doxygen doc for av_err2str in my version of the code. Is it certain that the scope and type of a variable declared (char[SIZE]){0} in a function argument list is well defined and identical across all compilers? I personally find it an unreadable and ambiguous construct...


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