yumeyao 36d14b8ce3 add an extra check if the user mis-declares formatter<custom_type>::store()'s first arguments as non-reference		2021-03-02 14:40:33 +08:00
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fmt	add an extra check if the user mis-declares formatter<custom_type>::store()'s first arguments as non-reference	2021-03-02 14:40:33 +08:00