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POWin32 api call Error GetShortPathName in f#
 

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    <p>I can get this code to run in the interactive environment but it crashes when I run the code from debugger or from the .exe file</p> <p>Forgot the error: FatalExecutionEngineError was detected! The runtime has encountered a fatal error. The address of the error was at 0x6c9781b0, on thread 0x1104. The error code is 0xc0000005. This error may be a bug in the CLR or in the unsafe or non-verifiable portions of user code. Common sources of this bug include user marshaling errors for COM-interop or PInvoke, which may corrupt the stack.</p> <p>Using .net 4.5</p> <pre><code>open System.IO open System.Runtime.InteropServices open System.Text [&lt;DllImport("kernel32.dll",CharSet = CharSet.Auto, SetLastError=true)&gt;] extern uint32 GetShortPathName( [&lt;MarshalAs(UnmanagedType.LPWStr)&gt;] string longpath, [&lt;MarshalAs(UnmanagedType.LPWStr)&gt;] StringBuilder shortpath, [&lt;MarshalAs(UnmanagedType.U4)&gt;] uint32 item) let MakeShortName(longPath : string) = let sb = StringBuilder() let currPath = longPath let item = 1024u // let blah = "" //win32 assigns shortPath let blah32 = GetShortPathName(currPath, sb, item) sb.ToString() [&lt;EntryPoint&gt;] let main argv = let path = @"C:\dev\shortName\shortName" let shorty = MakeShortName path printfn "%s" shorty let x = System.Console.ReadKey() 0 </code></pre> <p>Interactive env</p> <hr> <p>$ (me alt+entering the above two functions)</p> <p>val GetShortPathName : string * StringBuilder * uint32 -> uint32 val MakeShortName : string -> string</p> <p>$ MakeShortName @"C:\dev\shortName\shortName";; val it : string = "C:\dev\SHORTN~1\SHORTN~1"</p>
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    1. USAdam Lear
    1. USDave Hanson
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    1. COIf you solved your own question, please post it as an answer.
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    2. COIt won't let me for 8 hours not enough rep =/
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    3. CO@DaveHanson we have lowered the rep requirements for self answering - please try answering again
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      1. USGeoff Dalgas
 

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