33 lines
942 B
C++
33 lines
942 B
C++
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// RUN: %clang_cc1 -std=c++1y -verify %s
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// expected-no-diagnostics
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constexpr void copy(const char *from, unsigned long count, char *to) {
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unsigned long n = (count + 7) / 8;
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switch(count % 8) {
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case 0: do { *to++ = *from++;
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case 7: *to++ = *from++;
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case 6: *to++ = *from++;
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case 5: *to++ = *from++;
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case 4: *to++ = *from++;
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case 3: *to++ = *from++;
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case 2: *to++ = *from++;
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case 1: *to++ = *from++;
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} while(--n > 0);
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}
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}
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struct S {
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char stuff[14];
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constexpr S() : stuff{} {
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copy("Hello, world!", 14, stuff);
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}
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};
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constexpr bool streq(const char *a, const char *b) {
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while (*a && *a == *b) ++a, ++b;
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return *a == *b;
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}
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static_assert(streq(S().stuff, "Hello, world!"), "should be same");
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static_assert(!streq(S().stuff, "Something else"), "should be different");
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