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-rw-r--r--include/stc/cpque.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/stc/cpque.h b/include/stc/cpque.h
index 183390c4..532bf710 100644
--- a/include/stc/cpque.h
+++ b/include/stc/cpque.h
@@ -86,7 +86,7 @@ STC_INLINE const _cx_value* _cx_memb(_top)(const _cx_self* self)
{ return &self->data[0]; }
STC_INLINE void _cx_memb(_pop)(_cx_self* self)
- { _cx_memb(_erase_at)(self, 0); }
+ { assert(!_cx_memb(_empty)(self)); _cx_memb(_erase_at)(self, 0); }
#if !defined _i_no_clone
STC_API _cx_self _cx_memb(_clone)(_cx_self q);