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-rw-r--r--libass/ass_utils.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/libass/ass_utils.h b/libass/ass_utils.h
index 3f65b87..0379df6 100644
--- a/libass/ass_utils.h
+++ b/libass/ass_utils.h
@@ -185,6 +185,9 @@ static inline int double_to_d22(double x)
static inline uint32_t fnv_32a_buf(const void *buf, size_t len, uint32_t hval)
{
+ if (!len)
+ return hval;
+
const uint8_t *bp = buf;
size_t n = (len + 3) / 4;