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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 f4abe43469..452f91acf2 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -661,6 +661,7 @@ zstream_append_input(struct zstream *z, const Bytef *src, unsigned int len)
}
#define zstream_append_input2(z,v)\
+ RB_GC_GUARD(v),\
zstream_append_input((z), (Bytef*)RSTRING_PTR(v), RSTRING_LEN(v))
static void