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-rw-r--r--io_buffer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/io_buffer.c b/io_buffer.c
index e252af3513..a0d988e259 100644
--- a/io_buffer.c
+++ b/io_buffer.c
@@ -1462,7 +1462,7 @@ static void
io_buffer_validate_type(size_t size, size_t offset)
{
if (offset > size) {
- rb_raise(rb_eArgError, "Type extends beyond end of buffer! (offset=%ld > size=%ld)", offset, size);
+ rb_raise(rb_eArgError, "Type extends beyond end of buffer! (offset=%"PRIdSIZE" > size=%"PRIdSIZE")", offset, size);
}
}