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-rw-r--r--cache-tree.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/cache-tree.c b/cache-tree.c
index 350a79b768..077f034369 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -478,7 +478,7 @@ static struct cache_tree *read_one(const char **buffer, unsigned long *size_p)
if (0 <= it->entry_count) {
if (size < 20)
goto free_return;
- hashcpy(it->sha1, (unsigned char*)buf);
+ hashcpy(it->sha1, (const unsigned char*)buf);
buf += 20;
size -= 20;
}