If merge() is called on an empty vector, then priv_merge_in_new_buffer() will
call deallocate() with size 0 on the old (not-yet-allocated) vector storage.
This violates the Allocator requirement that the pointer passed to deallocate()
must have come from a call to allocate() with the same size.
Fix this by checking old_cap against 0, and also add a unit test for this bug.
igaztanaga
commented
5 years ago
If merge() is called on an empty vector, then priv_merge_in_new_buffer() will call deallocate() with size 0 on the old (not-yet-allocated) vector storage. This violates the Allocator requirement that the pointer passed to deallocate() must have come from a call to allocate() with the same size.
Fix this by checking old_cap against 0, and also add a unit test for this bug.