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-rw-r--r--crypto/buffer/buffer.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/buffer/buffer.h b/crypto/buffer/buffer.h
index 178e418282b2..f8da32b48507 100644
--- a/crypto/buffer/buffer.h
+++ b/crypto/buffer/buffer.h
@@ -88,7 +88,7 @@ int BUF_MEM_grow_clean(BUF_MEM *str, size_t len);
char * BUF_strdup(const char *str);
char * BUF_strndup(const char *str, size_t siz);
void * BUF_memdup(const void *data, size_t siz);
-void BUF_reverse(unsigned char *out, unsigned char *in, size_t siz);
+void BUF_reverse(unsigned char *out, const unsigned char *in, size_t siz);
/* safe string functions */
size_t BUF_strlcpy(char *dst,const char *src,size_t siz);