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#include <Halide.h>
#include <cstdio>
#include <string>
enum class Example {
A,
B,
C
};
// If the error macros are implemented correctly, it should be possible
// to determine that example_to_string returns a value in all non-error
// cases.
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic error "-Wreturn-type"
#elif defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic error "-Wreturn-type"
#elif defined(_MSC_VER)
#pragma warning(push)
#pragma warning(error : 4715)
#endif
std::string example_to_string1(const Example e) {
switch (e) {
case Example::A:
return "A";
case Example::B:
return "B";
// Oops, missing Example::C.
default:
break;
}
internal_error << "Unreachable\n";
}
std::string example_to_string2(const Example e) {
switch (e) {
case Example::A:
return "A";
case Example::B:
return "B";
// Oops, missing Example::C.
default:
break;
}
internal_assert(false) << "Unreachable\n";
}
#if defined(__clang__)
#pragma clang diagnostic pop
#elif defined(__GNUC__)
#pragma GCC diagnostic pop
#elif defined(_MSC_VER)
#pragma warning(pop)
#endif
int main() {
printf("Success!\n");
return 0;
}
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