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-rw-r--r--pack.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/pack.c b/pack.c
index b22a834..8e58364 100644
--- a/pack.c
+++ b/pack.c
@@ -1001,6 +1001,7 @@ pack_pack(ary, fmt)
if (associates) {
rb_str_associate(res, associates);
}
+ OBJ_INFECT(res, fmt);
return res;
}