[FFmpeg-devel] [PATCH] avutil/error: document av_err2str

[Zhao Zhili]

---
 libavutil/error.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavutil/error.h b/libavutil/error.h
index 71df4da..b357bfa 100644
--- a/libavutil/error.h
+++ b/libavutil/error.h
@@ -115,6 +115,9 @@ static inline char *av_make_error_string(char *errbuf, size_t errbuf_size, int e
 /**
  * Convenience macro, the return value should be used only directly in
  * function arguments but never stand-alone.
+ *
+ * @warning The macro uses compound literal which was introduced in C99. It may
+ *          not work in C++.
  */
 #define av_err2str(errnum) \
     av_make_error_string((char[AV_ERROR_MAX_STRING_SIZE]){0}, AV_ERROR_MAX_STRING_SIZE, errnum)
-- 
2.9.5