hanchenye-llvm-project/clang/test/SemaCXX/warn-sign-conversion-cpp11.cpp

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// RUN: %clang_cc1 -fsyntax-only -verify -Wsign-conversion -std=c++11 %s
unsigned int test() {
short foo;
return foo; // expected-warning {{implicit conversion changes signedness}}
}
unsigned int test3() {
// For a non-defined enum, use the underlying type.
enum u8 : signed char;
u8 foo{static_cast<u8>(0)};
return foo; // expected-warning {{implicit conversion changes signedness}}
}
unsigned int test2() {
// For a non-defined enum, use the underlying type.
enum u8 : unsigned char;
u8 foo{static_cast<u8>(0)};
return foo;
}