std::wstring_convert<Codecvt,Elem,Wide_alloc,Byte_alloc>:: ~wstring_convert
From cppreference.com
< cpp | locale | wstring convert
| ~wstring_convert(); |
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Destroys the wstring_convert object and deletes cvtptr .
[edit] Notes
Some implementations are able to delete any facet, including the locale-specific facets with protected destructors. Other implementations require the facet to have a public destructor, similar to the locale-independent facets from <codecvt>.
[edit] Example
Run this code
#include <codecvt> #include <locale> #include <utility> // utility wrapper to adapt locale-bound facets for wstring/wbuffer convert template<class Facet> struct deletable_facet : Facet { template<class... Args> deletable_facet(Args&&... args) : Facet(std::forward<Args>(args)...) {} ~deletable_facet() {} }; int main() { // GB18030 / UCS4 conversion, using locale-based facet directly // typedef std::codecvt_byname<char32_t, char, std::mbstate_t> gbfacet_t; // Compiler error: "calling a protected destructor of // codecvt_byname<> in ~wstring_convert" // std::wstring_convert<gbfacet_t> gbto32(new gbfacet_t("zh_CN.gb18030")); // GB18030 / UCS4 conversion facet using a facet with public destructor typedef deletable_facet<std::codecvt_byname<char32_t, char, std::mbstate_t>> gbfacet_t; std::wstring_convert<gbfacet_t> gbto32(new gbfacet_t("zh_CN.gb18030")); } // destructor called here
