67c608a969
Now with concepts support merged and mostly complete, we do not need -fconcepts-ts (which was also misleading as we were not implementing the TS) and can enable concepts features under C++2a. A warning will be generated if users still attempt to use -fconcepts-ts.
20 lines
1.0 KiB
C++
20 lines
1.0 KiB
C++
// RUN: %clang_cc1 -std=c++2a -verify %s
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auto l1 = [] (auto x) requires (sizeof(decltype(x)) == 1) { return x; };
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// expected-note@-1{{candidate template ignored: constraints not satisfied [with x:auto = int]}}
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// expected-note@-2{{because 'sizeof(decltype(x)) == 1' (4 == 1) evaluated to false}}
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auto l1t1 = l1('a');
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auto l1t2 = l1(1);
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// expected-error@-1{{no matching function for call to object of type '(lambda at}}
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auto l2 = [] (auto... x) requires ((sizeof(decltype(x)) >= 2) && ...) { return (x + ...); };
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// expected-note@-1{{candidate template ignored: constraints not satisfied [with x:auto = <char>]}}
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// expected-note@-2{{candidate template ignored: constraints not satisfied [with x:auto = <int, char>]}}
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// expected-note@-3 2{{because 'sizeof(decltype(x)) >= 2' (1 >= 2) evaluated to false}}
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auto l2t1 = l2('a');
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// expected-error@-1{{no matching function for call to object of type '(lambda at}}
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auto l2t2 = l2(1, 'a');
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// expected-error@-1{{no matching function for call to object of type '(lambda at}}
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auto l2t3 = l2((short)1, (short)1); |