forked from OSchip/llvm-project
35 lines
1.8 KiB
C++
35 lines
1.8 KiB
C++
// RUN: %clang_cc1 %s -std=c++20 -fsyntax-only -verify
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template <int N> struct Str {
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constexpr Str(char const (&s)[N]) { __builtin_memcpy(value, s, N); }
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char value[N];
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};
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template <Str V> class ASCII {};
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void Foo(ASCII<"this nontype template argument is too long to print">); // expected-note {{no known conversion from 'ASCII<{"this nontype template argument is too long"}>' to 'ASCII<{"this nontype template argument is too long to print"}>'}}
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void Bar(ASCII<"this nttp argument is too short">); // expected-note {{no known conversion from 'ASCII<{{119, 97, 105, 116, 32, 97, 32, 115, 27, 99, 111, 110, 100, 0}}>' to 'ASCII<{"this nttp argument is too short"}>'}}
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void Meow(ASCII<"what|">); // expected-note {{no known conversion from 'ASCII<{"what??!"}>' to 'ASCII<{"what|"}>' for 1st argument}}
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void test_ascii() {
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ASCII<"this nontype template argument"
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" is too long">
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a;
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Foo(a); // expected-error {{no matching function}}
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decltype(a)::display(); // expected-error {{no member named 'display' in 'ASCII<{"this nontype template argument is [...]"}>'}}
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}
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void test_non_ascii() {
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ASCII<"wait a s\033cond"> a;
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Bar(a); // expected-error {{no matching function}}
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decltype(a)::display(); // expected-error {{no member named 'display' in 'ASCII<{{119, 97, 105, 116, 32, 97, 32, 115, 27, 99, ...}}>'}}
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}
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// The dialects (C++20 and above) that accept string literals as non-type
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// template arguments do not support trigraphs.
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void test_trigraph() {
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ASCII<"what??!"> a; // expected-warning {{trigraph ignored}}
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Meow(a); // expected-error {{no matching function}}
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decltype(a)::display(); // expected-error {{no member named 'display' in 'ASCII<{"what??!"}>'}}
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}
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