[Mono-bugs] [Bug 80173][Wis] New - ironpython: os.popen() causes segfault

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Changed by anthony at interlink.com.au.

http://bugzilla.ximian.com/show_bug.cgi?id=80173

--- shadow/80173	2006-12-06 18:26:20.000000000 -0500
+++ shadow/80173.tmp.11677	2006-12-06 18:26:20.000000000 -0500
@@ -0,0 +1,133 @@
+Bug#: 80173
+Product: Mono: Runtime
+Version: 1.1
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Wishlist
+Component: misc
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: anthony at interlink.com.au               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: ironpython: os.popen() causes segfault
+
+On both IronPython 1.0.1 and IPCE release 4, os.popen() segfaults
+under Mono 1.17.1 (on Ubuntu edgy).
+
+To reproduce:
+ipy.exe -c "import os; print os.popen('/bin/ls', 'r').read()"
+
+Stacktrace follows, for whatever value it is... I can't tell
+immediately whether it's an IronPython or Mono problem, although it
+_appears_ to be in Mono. 
+
+Dino Viehland <dinov at exchange.microsoft.com> added:
+> I would expect this to be a Mono bug as IronPython is entirely managed 
+> code.
+
+> There's always the possibility we are generating invalid IL but we're not 
+> aware of any places where we currently do that (as we validate all the IL 
+> we generate w/ peverify during our test runs, which include importing the 
+> CPython os module).
+
+
+
+=================================================================
+Got a SIGSEGV while executing native code. This usually indicates
+a fatal error in the mono runtime or one of the native libraries
+used by your application.
+=================================================================
+
+Stacktrace
+
+ at (wrapper managed-to-native)
+System.Diagnostics.Process.CreateProcess_internal
+(System.Diagnostics.ProcessStartInfo,intptr,intptr,intptr,System.Diagnostics.Process/ProcInfo&)
+<0x00004>
+ at (wrapper managed-to-native)
+System.Diagnostics.Process.CreateProcess_internal
+(System.Diagnostics.ProcessStartInfo,intptr,intptr,intptr,System.Diagnostics.Process/ProcInfo&)
+<0xffffffff>
+ at System.Diagnostics.Process.Start_noshell
+(System.Diagnostics.ProcessStartInfo,System.Diagnostics.Process)
+<0x00547>
+ at System.Diagnostics.Process.Start_common
+(System.Diagnostics.ProcessStartInfo,System.Diagnostics.Process)
+<0x0007c>
+ at System.Diagnostics.Process.Start
+(System.Diagnostics.ProcessStartInfo) <0x00032>
+ at IronPython.Modules.PythonNT.OpenPipedCommand
+(IronPython.Runtime.Calls.ICallerContext,string,string,int) <0x000ae>
+ at IronPython.Modules.PythonNT.OpenPipedCommand
+(IronPython.Runtime.Calls.ICallerContext,string,string) <0x00015>
+ at (wrapper dynamic-method) System.Object.OpenPipedCommand##49
+(IronPython.Runtime.Calls.ICallerContext,object,object) <0xffffffff>
+ at (wrapper delegate-invoke)
+System.MulticastDelegate.invoke_object_ICallerContext_object_object
+(IronPython.Runtime.Calls.ICallerContext,object,object) <0xffffffff>
+ at IronPython.Runtime.Calls.FastCallableWithContextAny.Call
+(IronPython.Runtime.Calls.ICallerContext,object,object) <0x00023>
+ at IronPython.Runtime.Calls.BuiltinFunction.Call
+(IronPython.Runtime.Calls.ICallerContext,object,object) <0x00023>
+ at IronPython.Runtime.Operations.Ops.CallWithContext
+(IronPython.Runtime.Calls.ICallerContext,object,object,object)
+<0x00042>
+ at (wrapper dynamic-method) System.Object.<stdin>##47
+(IronPython.Runtime.ModuleScope) <0xffffffff>
+ at (wrapper delegate-invoke)
+System.MulticastDelegate.invoke_object_ModuleScope
+(IronPython.Runtime.ModuleScope) <0xffffffff>
+ at IronPython.Hosting.CompiledCode.Run
+(IronPython.Runtime.ModuleScope) <0x00048>
+ at IronPython.Hosting.PythonEngine.ExecuteToConsole
+(string,IronPython.Hosting.EngineModule,System.Collections.Generic.IDictionary`2)
+<0x00180>
+ at IronPython.Hosting.PythonEngine.ExecuteToConsole (string) <0x00015>
+ at IronPythonConsole.PythonCommandLine.RunString
+(IronPython.Hosting.PythonEngine,string) <0x000bc>
+ at IronPythonConsole.PythonCommandLine.Run
+(IronPython.Hosting.PythonEngine,string) <0x0002b>
+ at IronPythonConsole.PythonCommandLine.Main (string[]) <0x002bf>
+ at (wrapper runtime-invoke)
+System.Object.runtime_invoke_int_string[]
+(object,intptr,intptr,intptr) <0xffffffff>
+
+Native stacktrace:
+
+       /usr/bin/mono(mono_handle_native_sigsegv+0xde) [0x815644e]
+       /usr/bin/mono [0x8122c88]
+       [0xffffe440]
+       /usr/bin/mono(mono_unicode_to_external+0x3f) [0x811309f]
+       /usr/bin/mono [0x8103947]
+       /usr/bin/mono [0x80d6b57]
+       [0xb6e5d3fa]
+       [0xb6e5c880]
+       [0xb6e5c275]
+       [0xb6e5c0cb]
+       [0xb6e5ba5f]
+       [0xb6e5b996]
+       [0xb6e5b90a]
+       [0xb6e6b45c]
+       [0xb6e6b3d4]
+       [0xb6e5acfc]
+       [0xb6e5ac73]
+       [0xb6e5b6b3]
+       [0xb6e5378a]
+       [0xb6e53711]
+       [0xb6e5af89]
+       [0xb6e5adee]
+       [0xb706d4fd]
+       [0xb706d34c]
+       [0xb79725a0]
+       [0xb7971a84]
+       /usr/bin/mono(mono_runtime_exec_main+0x9f) [0x80996ef]
+       /usr/bin/mono(mono_runtime_run_main+0x1b9) [0x8099999]
+       /usr/bin/mono(mono_main+0xe47) [0x805d477]
+       /usr/bin/mono [0x805c122]
+       /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc) [0xb7d058cc]
+       /usr/bin/mono [0x805c071]