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-rw-r--r--ext/zlib/zlib.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index b05e5264c5..923e3a72bb 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -762,6 +762,7 @@ zstream_run(z, src, len, flush)
zstream_reset_input(z);
if (z->stream.avail_in > 0) {
zstream_append_input(z, z->stream.next_in, z->stream.avail_in);
+ guard = Qnil; /* prevent tail call to make guard effective */
}
}