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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 1830386684a0
children
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// { dg-do compile { target c++17_only } }
// { dg-options "-fconcepts" }

template<typename T>
  concept auto C1() { return 0; } // { dg-error "16:concept .concept auto C1\\(\\). declared with a deduced return type" }

template<typename T>
  concept int C2() { return 0; } // { dg-error "15:concept .concept int C2\\(\\). with non-.bool. return type .int." }

template<typename T>
  concept bool C3(int) { return 0; } // { dg-error "16:concept .concept bool C3\\(int\\). declared with function parameters" }