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.NET Forum / .NET Framework / Interop / May 2006Can unmanged code corrupt dot net
Hi, If a dot net app calls unmanaged code can that unmanaged code corrupt the dot net app. I'm thinking about a lang using pointers. If yes, are there any good debugging techniques to catch this? Thanx jra >If a dot net app calls unmanaged code can that unmanaged code corrupt the >dot net app. I'm thinking about a lang using pointers. > >If yes, are there any good debugging techniques to catch this? Unmanaged code can certainly do harm. But the end result is usually that you get an exception or the process is terminated, both are easy to detect. Managed Debugging Assistants (MDAs) will alert you of certain common errors. Mattias  SignatureMattias Sjögren [C# MVP] mattias @ mvps.org http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com Please reply only to the newsgroup. I think I know what he means. What is if a "wild" pointer overwrites data which belongs to a .net object? Iam not sure wheather .NET will be able to detect such things, how could it? > >If a dot net app calls unmanaged code can that unmanaged code corrupt the >>dot net app. I'm thinking about a lang using pointers. [quoted text clipped - 7 lines] > > Mattias You are right, it can't, it's very easy to corrupt the GC heap from unmanaged code, and there is nothing the CLR can do about it. It's even possible to corrupt the heap from managed code, simply use unsafe constructs and let pointers go wild when writing stuff to the heap and watch your process die in a nice crash. Willy. |I think I know what he means. What is if a "wild" pointer overwrites data | which belongs to a .net object? Iam not sure wheather .NET will be able to [quoted text clipped - 11 lines] | > | > Mattias Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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