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.NET Forum / .NET Framework / CLR / September 2003

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Managed C++ potential bug: Lack of "return" statement not an error

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Brian Kelly - 26 Sep 2003 21:05 GMT
Hi all,

With .NET 1.1, the following code does not give an error
during compilation:

Type*
foo()
{
   if (0)
   {
    throw 1;
   }
}

Note the lack of a possible valid return path! Typically, a C++
compiler will flag this with an error such as "not all control paths
return a value". However, with cl.exe and the /clr switch, no such
error is given.

However the biggest problem with this is its implicit behaviour - when
I call this, it actually returns me a NULL pointer. This just caused
me an hour of hair-pulling :-(

Hopefully someone from Microsoft can verify if this is a bug or
expected behaviour.

Thanks in advance,

Brian
Mattias Sj?gren - 27 Sep 2003 21:49 GMT
Brian,

>Hopefully someone from Microsoft can verify if this is a bug or
>expected behaviour.

You'll have more luck finding the right people if you re-post to
microsoft.public.dotnet.languages.vc.

Mattias

Signature

Mattias Sjögren [MVP]  mattias @ mvps.org
http://www.msjogren.net/dotnet/
Please reply only to the newsgroup.


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