X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=delta.h;h=09b2e1eed5dfc772feb38715f051eff43570d4cb;hb=ac4c758adcf52b913b82d481626b0f8648e95475;hp=9464f3e9b08b959d11305688ce194867a4017817;hpb=f1fffec77e38ee4a379b6e3169602dd2bfb3acc7;p=git.git

diff --git a/delta.h b/delta.h
index 9464f3e9..09b2e1ee 100644
--- a/delta.h
+++ b/delta.h
@@ -2,11 +2,11 @@
 #define DELTA_H
 
 /* handling of delta buffers */
-extern void *diff_delta(void *from_buf, unsigned long from_size,
-			void *to_buf, unsigned long to_size,
+extern void *diff_delta(const void *from_buf, unsigned long from_size,
+			const void *to_buf, unsigned long to_size,
 		        unsigned long *delta_size, unsigned long max_size);
 extern void *patch_delta(void *src_buf, unsigned long src_size,
-			 void *delta_buf, unsigned long delta_size,
+			 const void *delta_buf, unsigned long delta_size,
 			 unsigned long *dst_size);
 
 /* the smallest possible delta size is 4 bytes */