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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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// PR c++/67117
// { dg-do compile { target c++17_only } }
// { dg-options "-fconcepts" }

template <class T>
  requires false
constexpr bool v = true;

template <class T>
constexpr bool f() { return true; }

template <class T>
  requires v<T>
constexpr bool f() { return false; }

static_assert(f<void>());
static_assert(v<void>);		// { dg-error "invalid" }