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Extend postcondition on Path.GetTempFileName #305

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SergeyTeplyakov merged 1 commit into from
Nov 20, 2015
Merged

Extend postcondition on Path.GetTempFileName #305

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3 changes: 2 additions & 1 deletion Microsoft.Research/Contracts/MsCorlib/System.IO.Path.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -216,7 +216,8 @@ public static string GetRandomFileName()

public static string GetTempFileName()
{
Contract.Ensures(Contract.Result<string>() != null);
Contract.Ensures(!string.IsNullOrWhitespace(Contract.Result<string>()));
Contract.Ensures(Contract.Result<string>().Length >= 4);
Contract.EnsuresOnThrow<System.IO.IOException>(true, @"An I/O error occurs, such as no unique temporary file name is available. - or - This method was unable to create a temporary file.");
return default(string);
}
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