19 lines
737 B
C++
19 lines
737 B
C++
// RUN: %clang_cc1 -std=c++11 -verify %s
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using size_t = decltype(sizeof(int));
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constexpr const char *operator "" _id(const char *p, size_t) { return p; }
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constexpr const char *s = "foo"_id "bar" "baz"_id "quux";
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constexpr bool streq(const char *p, const char *q) {
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return *p == *q && (!*p || streq(p+1, q+1));
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}
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static_assert(streq(s, "foobarbazquux"), "");
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constexpr const char *operator "" _trim(const char *p, size_t n) {
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return *p == ' ' ? operator "" _trim(p + 1, n - 1) : p;
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}
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constexpr const char *t = " " " "_trim " foo";
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static_assert(streq(t, "foo"), "");
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const char *u = "foo" "bar"_id "baz" "quux"_di "corge"; // expected-error {{differing user-defined suffixes ('_id' and '_di') in string literal concatenation}}
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