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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 30c3241674..9c6cf9495e 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -708,7 +708,7 @@ zstream_run(struct zstream *z, Bytef *src, uInt len, int flush)
/* keep reference to `z->input' so as not to be garbage collected
after zstream_reset_input() and prevent `z->stream.next_in'
from dangling. */
- guard = z->input;
+ RB_GC_GUARD(guard) = z->input;
}
if (z->stream.avail_out == 0) {