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-rw-r--r--sha1_file.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sha1_file.c b/sha1_file.c
index 7cfd43c..e648c06 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -266,7 +266,7 @@ static char *find_sha1_file(const unsigned char *sha1, struct stat *st)
return NULL;
}
-int check_sha1_signature(unsigned char *sha1, void *map, unsigned long size, const char *type)
+int check_sha1_signature(const unsigned char *sha1, void *map, unsigned long size, const char *type)
{
char header[100];
unsigned char real_sha1[20];