[Mono-bugs] [Bug 682859] New: System.Diagnostics.ProcessStartInfo environment variable sticky between process invocations

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https://bugzilla.novell.com/show_bug.cgi?id=682859

https://bugzilla.novell.com/show_bug.cgi?id=682859#c0


           Summary: System.Diagnostics.ProcessStartInfo environment
                    variable sticky between process invocations
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.10.x
          Platform: x86-64
        OS/Version: UNIX Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: System
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: arx.sales at verizon.net
         QAContact: mono-bugs at lists.ximian.com
          Found By: Component Test
           Blocker: Yes


Description of Problem:

using different instances of System.Diagnostics.ProcessStartInfo with different
environment variable settings doesn't work. In other words, with
ProcessStartInfo environment variable set to different values has no effect
between Process invocations (i.e. Process.Start(startInfo)). 


Steps to reproduce the problem:
1. produce 2 instances of ProcessStartInfo, say with
processStartInfo1.EnvironmentVariables["Display"] = ":10"
processStartInfo2.EnvironmentVariables["Display"] = ":11"

2. Using the above example, 
process1.Start(processStartInfo1) 
and 
process2.Start(processStartInfo2) 

Actual Results:

both processes will point to the same DISPLAY because the environments for both
processes say DISPLAY=:10

Expected Results:
process1's enviroment variable value for DISPLAY should be :10
process2's environment variable value for DISPLAY should be :11

How often does this happen? 

Consistently, everytime

Additional Information:
In addition to the environment variable, the following items were also set
during test conditions:

            processStartInfo1 = new ProcessStartInfo(appName, appArgs);
            processStartInfo1.WorkingDirectory = appDir;
            processStartInfo1.RedirectStandardInput = true;
            processStartInfo1.RedirectStandardOutput = true;
            processStartInfo1.RedirectStandardError = true;
            processStartInfo1.UseShellExecute = false;

and

            processStartInfo2 = new ProcessStartInfo(appName, appArgs);
            processStartInfo2.WorkingDirectory = appDir;
            processStartInfo2.RedirectStandardInput = true;
            processStartInfo2.RedirectStandardOutput = true;
            processStartInfo2.RedirectStandardError = true;
            processStartInfo2.UseShellExecute = false;

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