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-rw-r--r--c_src/filebuffer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/c_src/filebuffer.c b/c_src/filebuffer.c
index 2ca76de..70d7827 100644
--- a/c_src/filebuffer.c
+++ b/c_src/filebuffer.c
@@ -139,7 +139,7 @@ unsigned char *
bf_read(buffered_file *file, uint64_t offset, size_t length, char **error)
{
unsigned char *result = malloc(length);
- dprintf(READ, (stderr, "reading data: offset %llu\n", offset));
+ dprintf(READ, (stderr, "reading data: offset %llu\n", (unsigned long long) offset));
if (offset >= file->filesize) {
uint64_t writebufferoffset = offset - file->filesize;