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Merge pull request #287 from nx10/gcc8-workaround

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GCC 8.3 workaround
This commit is contained in:
Farook Al-Sammarraie 2021-12-04 14:54:19 +03:00 committed by GitHub
commit 120e1f3ad2
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2 changed files with 16 additions and 4 deletions
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12
include/crow/app.h
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@ -79,12 +79,16 @@ namespace crow
return router_.new_rule_dynamic(std::move(rule)); return router_.new_rule_dynamic(std::move(rule));
} }
/// Create a route using a rule (**Use CROW_ROUTE instead**) ///Create a route using a rule (**Use CROW_ROUTE instead**)
template<uint64_t Tag> template<uint64_t Tag>
auto route(std::string&& rule) #ifdef CROW_GCC83_WORKAROUND
#ifdef CROW_CAN_USE_CPP17 auto& route(std::string&& rule)
-> typename std::invoke_result<decltype(&Router::new_rule_tagged<Tag>), Router, std::string&&>::type
#else #else
auto route(std::string&& rule)
#endif
#if defined CROW_CAN_USE_CPP17 && !defined CROW_GCC83_WORKAROUND
-> typename std::invoke_result<decltype(&Router::new_rule_tagged<Tag>), Router, std::string&&>::type
#elif !defined CROW_GCC83_WORKAROUND
-> typename std::result_of<decltype (&Router::new_rule_tagged<Tag>)(Router, std::string&&)>::type -> typename std::result_of<decltype (&Router::new_rule_tagged<Tag>)(Router, std::string&&)>::type
#endif #endif
{ {

8
include/crow/settings.h
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@ -57,3 +57,11 @@
#define noexcept throw() #define noexcept throw()
#endif #endif
#endif #endif
#if defined(__GNUC__) && __GNUC__ == 8 && __GNUC_MINOR__ < 4
#if __cplusplus > 201103L
#define CROW_GCC83_WORKAROUND
#else
#error "GCC 8.1 - 8.3 has a bug that prevents crow from compiling with C++11. Please update GCC to > 8.3 or use C++ > 11."
#endif
#endif