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lavu/common: add warning to GET_UTF8 doxy

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Should prevent wrong uses, or at least decrease their chance.
This commit is contained in:
Stefano Sabatini 2013-10-03 00:32:26 +02:00
parent 9d8e8495c9
commit 719b4eef5d
1 changed files with 5 additions and 0 deletions
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5
libavutil/common.h
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@ -295,6 +295,11 @@ static av_always_inline av_const int av_popcount64_c(uint64_t x)
* input, this could be *ptr++.
* @param ERROR Expression to be evaluated on invalid input,
* typically a goto statement.
*
* @warning ERROR should not contain a loop control statement which
* could interact with the internal while loop, and should force an
* exit from the macro code (e.g. through a goto or a return) in order
* to prevent undefined results.
*/
#define GET_UTF8(val, GET_BYTE, ERROR)\
val= GET_BYTE;\