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lavu/error: fix sign error in av_sterror() error code

The value returned by strerror_r may be positive depending on the system,
so it is necessary to use AVERROR() in order to get a negative
number. This way the successive negative check will not fail, and the
function will print a meaningful error message on the buffer.
This commit is contained in:
Stefano Sabatini 2012-06-01 23:30:16 +02:00
parent 4299fd23d3
commit 5683de00e9

View File

@ -61,7 +61,7 @@ int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
av_strlcpy(errbuf, entry->str, errbuf_size);
} else {
#if HAVE_STRERROR_R
ret = strerror_r(AVUNERROR(errnum), errbuf, errbuf_size);
ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size));
#else
ret = -1;
#endif