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-rw-r--r--libavutil/des.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavutil/des.h b/libavutil/des.h
index 70f89937c1..26a40dc0c1 100644
--- a/libavutil/des.h
+++ b/libavutil/des.h
@@ -34,6 +34,6 @@
* If your input data is in 8-bit blocks treat it as big-endian
* (use e.g. AV_RB64 and AV_WB64).
*/
-uint64_t ff_des_encdec(uint64_t in, uint64_t key, int decrypt);
+uint64_t ff_des_encdec(uint64_t in, uint64_t key, int decrypt) av_const;
#endif /* FFMPEG_DES_H */