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-rw-r--r--delta.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/delta.h b/delta.h
index 9464f3e9b..09b2e1eed 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 */