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-rw-r--r--pmt/src/lib/pmt_int.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/pmt/src/lib/pmt_int.h b/pmt/src/lib/pmt_int.h
index 285244cb5f..a973d30d9e 100644
--- a/pmt/src/lib/pmt_int.h
+++ b/pmt/src/lib/pmt_int.h
@@ -151,7 +151,7 @@ class pmt_pair : public pmt_base
pmt_t d_cdr;
public:
- pmt_pair(pmt_t car, pmt_t cdr);
+ pmt_pair(const pmt_t& car, const pmt_t& cdr);
//~pmt_pair(){};
bool is_pair() const { return true; }