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-rw-r--r--ext/zlib/zlib.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index ce1139dc5d..336cb2d095 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -3399,7 +3399,7 @@ rb_gzfile_total_out(VALUE obj)
if (total_out >= (uLong)buf_filled) {
return rb_uint2inum(total_out - buf_filled);
} else {
- return LONG2FIX(-(buf_filled - total_out));
+ return LONG2FIX(-(buf_filled - (long)total_out));
}
}