clang/test/CXX/expr/expr.prim/expr.prim.id/mixed-constraints.cpp

   1 // RUN:  %clang_cc1 -std=c++2a -verify %s
   2
   3 template<typename T> requires (sizeof(T) >= 4 && sizeof(T) <= 10)
   4 // expected-note@-1{{because 'sizeof(char[20]) <= 10' (20 <= 10) evaluated to false}}
   5 // expected-note@-2{{because 'sizeof(char) >= 4' (1 >= 4) evaluated to false}}
   6 void foo() requires (sizeof(T) <= 8) {}
   7 // expected-note@-1{{candidate template ignored: constraints not satisfied [with T = char]}}
   8 // expected-note@-2{{candidate template ignored: constraints not satisfied [with T = char[9]]}}
   9 // expected-note@-3{{candidate template ignored: constraints not satisfied [with T = char[20]]}}
  10 // expected-note@-4{{because 'sizeof(char[9]) <= 8' (9 <= 8) evaluated to false}}
  11
  12 void bar() {
  13   foo<char>(); // expected-error{{no matching function for call to 'foo'}}
  14   foo<int>();
  15   foo<unsigned long long int>();
  16   foo<char[9]>(); // expected-error{{no matching function for call to 'foo'}}
  17   foo<char[20]>(); // expected-error{{no matching function for call to 'foo'}}
  18 }