result code = -1
standard error = {
tests/diagnostics/void-function-returning-value.slang(16): error 30019: expected an expression of type 'void', got 'int'
    return 1;
           ^
tests/diagnostics/void-function-returning-value.slang(16): note: explicit conversion from 'int' to 'void' is possible
}
standard output = {
}