Area-CompilersBugConcept-Diagnostic ClarityLanguage-C#help wanted
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Description
Here are some examples demonstrating that flow analysis reports redundant errors when labels are not found. In each case the compiler reports that a label was not found, but then also reports a reachability error that would not be an error if a label had been found. The later error should be suppressed.
class Program
{
static void Main(string[] args)
{
int s = 23;
switch (s)
{
case 21:
goto case 1;
// redundant error "Control cannot fall through from one case label ('case 21:') to another
case 23:
goto default;
// redundant error "Control cannot fall out of switch from final case label ('case 23:')"
}
}
static int M()
{
goto foo;
// redundant error "not all code paths return a value"
}
}