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Catching IndexOutOfRange doesn't provide message #15692

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nealef opened this issue Jul 15, 2019 · 6 comments · Fixed by #15705 or xamarin/xamarin-android#3392

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@nealef
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@nealef nealef commented Jul 15, 2019

Steps to Reproduce

  1. Compile code below
  2. Run
using System;
using System.Text;

public class main{
        static void Main (string[] args)
        {
		int[,] myArray = new int[3, 2];
		try
		{
			int i1=myArray.GetLength(-1);
		}
		catch (System.IndexOutOfRangeException e)
		{
			//It should have this error: Index was outside the bounds of the array
			Console.WriteLine(" Where is the error message?? : " + e.Message);
		}
	}
}

Current Behavior

Output:

 Where is the error message?? : 

Expected Behavior

On Windows 10:

 Where is the error message?? : Index was outside the bounds of the array.

On which platforms did you notice this

[ ] macOS
[X ] Linux
[ ] Windows

Version Used:

  • 5.18.0
  • 6.5.0 (master/4e513f8)

Stacktrace

N/A

@nealef

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@nealef nealef commented Jul 15, 2019

I can see the constructor setting the _message variable but the get() is retrieving an empty string from that same field.

  at System.Exception..ctor (System.String message) [0x00000] in <14160130308c4f7fb4091de819487fe0>:0 
  at System.SystemException..ctor (System.String message) [0x00000] in <14160130308c4f7fb4091de819487fe0>:0 
  at System.IndexOutOfRangeException..ctor () [0x00000] in <14160130308c4f7fb4091de819487fe0>:0 
  at System.Array.GetLength (System.Array , System.Int32 ) [0x00000] in <14160130308c4f7fb4091de819487fe0>:0 
  at main.Main (System.String[] args) [0x00000] in <ab54d575471047268cecc87c46052ddb>:0

The value of "this" is the same in the constructor:

[0x3ffb1a77740: 0.00247 6] ENTER: System.Exception:.ctor (string)(this:0x3ffaa800528[System.IndexOutOfRangeException 46400.exe], [STRING:0x3ffaaed8130:Index was outside the bounds of the array.], )

As in the get_Message:

[0x3ffb1a77740: 0.00287 4] ENTER: System.Exception:get_Message ()(this:0x3ffaa800528[System.IndexOutOfRangeException 46400.exe], )
[0x3ffb1a77740: 0.00287 4] LEAVE: System.Exception:get_Message ()[STRING:0x3ffaa800660:]
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@nealef nealef commented Jul 15, 2019

I added some code to just play around with the message being constructed:

--- a/mcs/class/referencesource/mscorlib/system/exception.cs
+++ b/mcs/class/referencesource/mscorlib/system/exception.cs
@@ -51,9 +51,12 @@ namespace System {
         , _Exception
 #endif
 {
+internal String _msgCopy;
+
         private void Init()
         {
             _message = null;
+_msgCopy = null;
             _stackTrace = null;
             _dynamicMethods = null;
             HResult = __HResults.COR_E_EXCEPTION;
@@ -80,6 +83,7 @@ namespace System {
         public Exception(String message) {
             Init();
             _message = message;
+_msgCopy = message;
         }
     
         // Creates a new Exception.  All derived classes should 
@@ -153,6 +157,7 @@ namespace System {
         
         public virtual String Message {
                get {  
+Console.WriteLine("copy: {0}",_msgCopy);
                 if (_message == null) {
                     if (_className==null) {
                         _className = GetClassName();

And now the output of the test case is as expected:

copy: Index was outside the bounds of the array.
 Where is the error message?? : Index was outside the bounds of the array.
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@nealef nealef commented Jul 16, 2019

It appears that #15705 has addressed this problem. There is a similar problem but I'm not sure it has the same genesis and it's not fixed by the PR. Here is the simple test case:

using System;
using System.Security;

public class main{
        static void Main (string[] args)
        {
		try
		{
			throw new XmlSyntaxException(5,"A silly error");
		}
		catch (XmlSyntaxException e)
		{
			//It should have this error: Index was outside the bounds of the array
			Console.WriteLine(" What is the error message?? : " + e.Message);
		}
	}
}

Under mono we get:

 What is the error message?? : System error.

On Windows we get:

 What is the error message?? : Invalid syntax on line 5 - 'A silly error'.
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@vargaz vargaz commented Jul 16, 2019

Thats a different problem.
We are using corefx's version:

public sealed partial class XmlSyntaxException : SystemException
{
    public XmlSyntaxException() { }
    public XmlSyntaxException(int lineNumber) { }
    public XmlSyntaxException(int lineNumber, string message) { }
    public XmlSyntaxException(string message) { }
    public XmlSyntaxException(string message, Exception inner) { }
    private XmlSyntaxException(SerializationInfo info, StreamingContext context) : base(info, context) { }
}
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@nealef nealef commented Jul 16, 2019

Are you saying corefx would give the same result or that there is a problem but nothing to do with the original issue here? I'm trying to work out what to look at next.

vargaz added a commit that referenced this issue Jul 17, 2019
#15705)

Fixes #15692.
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@nealef nealef commented Jul 17, 2019

@vargaz WRT XmlSyntaxException - should I open another issue or is this the behavior of corefx?

madewokherd pushed a commit to madewokherd/mono that referenced this issue Jul 22, 2019
marek-safar added a commit that referenced this issue Jul 23, 2019
jonpryor added a commit to xamarin/xamarin-android that referenced this issue Jul 26, 2019
jonpryor added a commit to xamarin/xamarin-android that referenced this issue Jul 26, 2019
jonpryor added a commit to xamarin/xamarin-android that referenced this issue Jul 26, 2019
@marek-safar marek-safar added this to the 2019-06 (6.4.xx) milestone Aug 5, 2019
jonpryor added a commit to xamarin/xamarin-android that referenced this issue Sep 6, 2019
Changes: http://github.com/mono/mono/compare/2c3aeaf3780de7392a0d3cbe4dcf86846eb4dffa...29b1ac19c961b959a09097dbc0fe4cd567cc5298

	$ git diff --shortstat 2c3aeaf3..29b1ac19
	 1528 files changed, 45421 insertions(+), 21967 deletions(-)

Changes: mono/api-doc-tools@d03e819...5da8127

	$ git diff --shortstat d03e8198..5da8127a
	 1001 files changed, 86168 insertions(+), 11863 deletions(-)

Changes: mono/api-snapshot@e09042d...1ca8e82

	$ git diff --shortstat e09042da..1ca8e82f
        28 files changed, 612 insertions(+), 217 deletions(-)

Changes: mono/cecil@a6c8f5e...cb6c1ca

	$ git diff --shortstat a6c8f5e1..cb6c1ca9
	 13 files changed, 233 insertions(+), 88 deletions(-)

Changes: mono/corefx@4806207...470e0e1

	$ git diff --shortstat 4806207f...470e0e10
	 4 files changed, 31 insertions(+), 12 deletions(-)

Changes: mono/linker@ebe2a1f...1f87de3

	$ git diff --shortstat ebe2a1f4...1f87de35
        90 files changed, 3219 insertions(+), 1224 deletions(-)

Changes: xamarin/java.interop@befdbc0...be6048e

	$ git diff --shortstat befdbc03...be6048ed
        3 files changed, 3 insertions(+), 3 deletions(-)

Upstream-Fixes: https://bugs.winehq.org/show_bug.cgi?id=47561
Upstream-Fixes: https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems/edit/967582
Upstream-Fixes: dotnet/coreclr#25071
Upstream-Fixes: dotnet/coreclr#25242
Upstream-Fixes: dotnet/coreclr#25632
Upstream-Fixes: dotnet/coreclr#25709
Upstream-Fixes: dotnet/corefx#37955
Upstream-Fixes: dotnet/corefx#38455
Upstream-Fixes: mono/mono#7377
Upstream-Fixes: mono/mono#8747
Upstream-Fixes: mono/mono#9621
Upstream-Fixes: mono/mono#9664
Upstream-Fixes: mono/mono#9706
Upstream-Fixes: mono/mono#10201
Upstream-Fixes: mono/mono#10645
Upstream-Fixes: mono/mono#10748
Upstream-Fixes: mono/mono#10848
Upstream-Fixes: mono/mono#12141
Upstream-Fixes: mono/mono#13311
Upstream-Fixes: mono/mono#13408
Upstream-Fixes: mono/mono#13412
Upstream-Fixes: mono/mono#13891
Upstream-Fixes: mono/mono#13923
Upstream-Fixes: mono/mono#13945
Upstream-Fixes: mono/mono#14170
Upstream-Fixes: mono/mono#14214
Upstream-Fixes: mono/mono#14214
Upstream-Fixes: mono/mono#14215
Upstream-Fixes: mono/mono#14243
Upstream-Fixes: mono/mono#14377
Upstream-Fixes: mono/mono#14495
Upstream-Fixes: mono/mono#14555
Upstream-Fixes: mono/mono#14724
Upstream-Fixes: mono/mono#14729
Upstream-Fixes: mono/mono#14772
Upstream-Fixes: mono/mono#14792
Upstream-Fixes: mono/mono#14793
Upstream-Fixes: mono/mono#14809
Upstream-Fixes: mono/mono#14830
Upstream-Fixes: mono/mono#14839
Upstream-Fixes: mono/mono#14841
Upstream-Fixes: mono/mono#14847
Upstream-Fixes: mono/mono#14864
Upstream-Fixes: mono/mono#14871
Upstream-Fixes: mono/mono#14917
Upstream-Fixes: mono/mono#14945
Upstream-Fixes: mono/mono#14946
Upstream-Fixes: mono/mono#14948
Upstream-Fixes: mono/mono#14957
Upstream-Fixes: mono/mono#14959
Upstream-Fixes: mono/mono#14960
Upstream-Fixes: mono/mono#14961
Upstream-Fixes: mono/mono#14963
Upstream-Fixes: mono/mono#14971
Upstream-Fixes: mono/mono#14972
Upstream-Fixes: mono/mono#14975
Upstream-Fixes: mono/mono#15023
Upstream-Fixes: mono/mono#15048
Upstream-Fixes: mono/mono#15058
Upstream-Fixes: mono/mono#15080
Upstream-Fixes: mono/mono#15182
Upstream-Fixes: mono/mono#15188
Upstream-Fixes: mono/mono#15189
Upstream-Fixes: mono/mono#15261
Upstream-Fixes: mono/mono#15262
Upstream-Fixes: mono/mono#15263
Upstream-Fixes: mono/mono#15265
Upstream-Fixes: mono/mono#15268
Upstream-Fixes: mono/mono#15307
Upstream-Fixes: mono/mono#15324
Upstream-Fixes: mono/mono#15329
Upstream-Fixes: mono/mono#15330
Upstream-Fixes: mono/mono#15441
Upstream-Fixes: mono/mono#15446
Upstream-Fixes: mono/mono#15503
Upstream-Fixes: mono/mono#15541
Upstream-Fixes: mono/mono#15551
Upstream-Fixes: mono/mono#15556
Upstream-Fixes: mono/mono#15596
Upstream-Fixes: mono/mono#15691
Upstream-Fixes: mono/mono#15692
Upstream-Fixes: mono/mono#15740
Upstream-Fixes: mono/mono#15751
Upstream-Fixes: mono/mono#15760
Upstream-Fixes: mono/mono#15781
Upstream-Fixes: mono/mono#15794
Upstream-Fixes: mono/mono#15825
Upstream-Fixes: mono/mono#15853
Upstream-Fixes: mono/mono#15878
Upstream-Fixes: mono/mono#15887
Upstream-Fixes: mono/mono#15990
Upstream-Fixes: mono/mono#16032
Upstream-Fixes: mono/mono#16411
Upstream-Fixes: mono/mono#16486
Upstream-Fixes: https://github.com/mono/mono/issues/25709
Upstream-Fixes: https://github.com/mono/mono/issues/38821
Upstream-Fixes: #3112
Upstream-Fixes: #3168

Update `build-tools/automation/build.groovy` so that it fully cleans
the build tree before starting the build, so that the vestigial mono
submodule (removed in 0c9f83b) is *actually* removed from the build
tree, so that we don't inadvertently use *ancient* submodule contents.
jonpryor added a commit to jonpryor/xamarin-android that referenced this issue Sep 6, 2019
Changes: http://github.com/mono/mono/compare/2c3aeaf3780de7392a0d3cbe4dcf86846eb4dffa...29b1ac19c961b959a09097dbc0fe4cd567cc5298

	$ git diff --shortstat 2c3aeaf3..29b1ac19
	 1528 files changed, 45421 insertions(+), 21967 deletions(-)

Changes: mono/api-doc-tools@d03e819...5da8127

	$ git diff --shortstat d03e8198..5da8127a
	 1001 files changed, 86168 insertions(+), 11863 deletions(-)

Changes: mono/api-snapshot@e09042d...1ca8e82

	$ git diff --shortstat e09042da..1ca8e82f
        28 files changed, 612 insertions(+), 217 deletions(-)

Changes: mono/cecil@a6c8f5e...cb6c1ca

	$ git diff --shortstat a6c8f5e1..cb6c1ca9
	 13 files changed, 233 insertions(+), 88 deletions(-)

Changes: mono/corefx@4806207...470e0e1

	$ git diff --shortstat 4806207f...470e0e10
	 4 files changed, 31 insertions(+), 12 deletions(-)

Changes: mono/linker@ebe2a1f...1f87de3

	$ git diff --shortstat ebe2a1f4...1f87de35
	 90 files changed, 3219 insertions(+), 1224 deletions(-)

Changes: xamarin/java.interop@75b1189...4fd3539

	$ git diff --shortstat 75b11891...4fd35393
	 34 files changed, 448 insertions(+), 52 deletions(-)

Upstream-Fixes: https://bugs.winehq.org/show_bug.cgi?id=47561
Upstream-Fixes: https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems/edit/967582
Upstream-Fixes: dotnet/coreclr#25071
Upstream-Fixes: dotnet/coreclr#25242
Upstream-Fixes: dotnet/coreclr#25632
Upstream-Fixes: dotnet/coreclr#25709
Upstream-Fixes: dotnet/corefx#37955
Upstream-Fixes: dotnet/corefx#38455
Upstream-Fixes: mono/mono#7377
Upstream-Fixes: mono/mono#8747
Upstream-Fixes: mono/mono#9621
Upstream-Fixes: mono/mono#9664
Upstream-Fixes: mono/mono#9706
Upstream-Fixes: mono/mono#10201
Upstream-Fixes: mono/mono#10645
Upstream-Fixes: mono/mono#10748
Upstream-Fixes: mono/mono#10848
Upstream-Fixes: mono/mono#12141
Upstream-Fixes: mono/mono#13311
Upstream-Fixes: mono/mono#13408
Upstream-Fixes: mono/mono#13412
Upstream-Fixes: mono/mono#13891
Upstream-Fixes: mono/mono#13923
Upstream-Fixes: mono/mono#13945
Upstream-Fixes: mono/mono#14170
Upstream-Fixes: mono/mono#14214
Upstream-Fixes: mono/mono#14214
Upstream-Fixes: mono/mono#14215
Upstream-Fixes: mono/mono#14243
Upstream-Fixes: mono/mono#14377
Upstream-Fixes: mono/mono#14495
Upstream-Fixes: mono/mono#14555
Upstream-Fixes: mono/mono#14724
Upstream-Fixes: mono/mono#14729
Upstream-Fixes: mono/mono#14772
Upstream-Fixes: mono/mono#14792
Upstream-Fixes: mono/mono#14793
Upstream-Fixes: mono/mono#14809
Upstream-Fixes: mono/mono#14830
Upstream-Fixes: mono/mono#14839
Upstream-Fixes: mono/mono#14841
Upstream-Fixes: mono/mono#14847
Upstream-Fixes: mono/mono#14864
Upstream-Fixes: mono/mono#14871
Upstream-Fixes: mono/mono#14917
Upstream-Fixes: mono/mono#14945
Upstream-Fixes: mono/mono#14946
Upstream-Fixes: mono/mono#14948
Upstream-Fixes: mono/mono#14957
Upstream-Fixes: mono/mono#14959
Upstream-Fixes: mono/mono#14960
Upstream-Fixes: mono/mono#14961
Upstream-Fixes: mono/mono#14963
Upstream-Fixes: mono/mono#14971
Upstream-Fixes: mono/mono#14972
Upstream-Fixes: mono/mono#14975
Upstream-Fixes: mono/mono#15023
Upstream-Fixes: mono/mono#15048
Upstream-Fixes: mono/mono#15058
Upstream-Fixes: mono/mono#15080
Upstream-Fixes: mono/mono#15182
Upstream-Fixes: mono/mono#15188
Upstream-Fixes: mono/mono#15189
Upstream-Fixes: mono/mono#15261
Upstream-Fixes: mono/mono#15262
Upstream-Fixes: mono/mono#15263
Upstream-Fixes: mono/mono#15265
Upstream-Fixes: mono/mono#15268
Upstream-Fixes: mono/mono#15307
Upstream-Fixes: mono/mono#15324
Upstream-Fixes: mono/mono#15329
Upstream-Fixes: mono/mono#15330
Upstream-Fixes: mono/mono#15441
Upstream-Fixes: mono/mono#15446
Upstream-Fixes: mono/mono#15503
Upstream-Fixes: mono/mono#15541
Upstream-Fixes: mono/mono#15551
Upstream-Fixes: mono/mono#15556
Upstream-Fixes: mono/mono#15596
Upstream-Fixes: mono/mono#15691
Upstream-Fixes: mono/mono#15692
Upstream-Fixes: mono/mono#15740
Upstream-Fixes: mono/mono#15751
Upstream-Fixes: mono/mono#15760
Upstream-Fixes: mono/mono#15781
Upstream-Fixes: mono/mono#15794
Upstream-Fixes: mono/mono#15825
Upstream-Fixes: mono/mono#15853
Upstream-Fixes: mono/mono#15878
Upstream-Fixes: mono/mono#15887
Upstream-Fixes: mono/mono#15990
Upstream-Fixes: mono/mono#16032
Upstream-Fixes: mono/mono#16411
Upstream-Fixes: mono/mono#16486
Upstream-Fixes: https://github.com/mono/mono/issues/25709
Upstream-Fixes: https://github.com/mono/mono/issues/38821
Upstream-Fixes: xamarin#3112
Upstream-Fixes: xamarin#3168

Update `build-tools/automation/build.groovy` so that it fully cleans
the build tree before starting the build, so that the vestigial mono
submodule (removed in 0c9f83b) is *actually* removed from the build
tree, so that we don't inadvertently use *ancient* submodule contents.
jonpryor added a commit to xamarin/xamarin-android that referenced this issue Sep 7, 2019
Changes: http://github.com/mono/mono/compare/2c3aeaf3780de7392a0d3cbe4dcf86846eb4dffa...29b1ac19c961b959a09097dbc0fe4cd567cc5298

	$ git diff --shortstat 2c3aeaf3..29b1ac19
	 1528 files changed, 45421 insertions(+), 21967 deletions(-)

Changes: mono/api-doc-tools@d03e819...5da8127

	$ git diff --shortstat d03e8198..5da8127a
	 1001 files changed, 86168 insertions(+), 11863 deletions(-)

Changes: mono/api-snapshot@e09042d...1ca8e82

	$ git diff --shortstat e09042da..1ca8e82f
        28 files changed, 612 insertions(+), 217 deletions(-)

Changes: mono/cecil@a6c8f5e...cb6c1ca

	$ git diff --shortstat a6c8f5e1..cb6c1ca9
	 13 files changed, 233 insertions(+), 88 deletions(-)

Changes: mono/corefx@4806207...470e0e1

	$ git diff --shortstat 4806207f...470e0e10
	 4 files changed, 31 insertions(+), 12 deletions(-)

Changes: mono/linker@ebe2a1f...1f87de3

	$ git diff --shortstat ebe2a1f4...1f87de35
	 90 files changed, 3219 insertions(+), 1224 deletions(-)

Changes: xamarin/java.interop@75b1189...4fd3539

	$ git diff --shortstat 75b11891...4fd35393
	 34 files changed, 448 insertions(+), 52 deletions(-)

Fixes: #3112
Fixes: #3168

Context: https://bugs.winehq.org/show_bug.cgi?id=47561
Context: https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems/edit/967582
Context: dotnet/coreclr#25071
Context: dotnet/coreclr#25242
Context: dotnet/coreclr#25632
Context: dotnet/coreclr#25709
Context: dotnet/corefx#37955
Context: dotnet/corefx#38455
Context: mono/mono#7377
Context: mono/mono#8747
Context: mono/mono#9621
Context: mono/mono#9664
Context: mono/mono#9706
Context: mono/mono#10201
Context: mono/mono#10645
Context: mono/mono#10748
Context: mono/mono#10848
Context: mono/mono#12141
Context: mono/mono#13311
Context: mono/mono#13408
Context: mono/mono#13412
Context: mono/mono#13891
Context: mono/mono#13923
Context: mono/mono#13945
Context: mono/mono#14170
Context: mono/mono#14214
Context: mono/mono#14214
Context: mono/mono#14215
Context: mono/mono#14243
Context: mono/mono#14377
Context: mono/mono#14495
Context: mono/mono#14555
Context: mono/mono#14724
Context: mono/mono#14729
Context: mono/mono#14772
Context: mono/mono#14792
Context: mono/mono#14793
Context: mono/mono#14809
Context: mono/mono#14830
Context: mono/mono#14839
Context: mono/mono#14841
Context: mono/mono#14847
Context: mono/mono#14864
Context: mono/mono#14871
Context: mono/mono#14917
Context: mono/mono#14945
Context: mono/mono#14946
Context: mono/mono#14948
Context: mono/mono#14957
Context: mono/mono#14959
Context: mono/mono#14960
Context: mono/mono#14961
Context: mono/mono#14963
Context: mono/mono#14971
Context: mono/mono#14972
Context: mono/mono#14975
Context: mono/mono#15023
Context: mono/mono#15048
Context: mono/mono#15058
Context: mono/mono#15080
Context: mono/mono#15182
Context: mono/mono#15188
Context: mono/mono#15189
Context: mono/mono#15261
Context: mono/mono#15262
Context: mono/mono#15263
Context: mono/mono#15265
Context: mono/mono#15268
Context: mono/mono#15307
Context: mono/mono#15324
Context: mono/mono#15329
Context: mono/mono#15330
Context: mono/mono#15441
Context: mono/mono#15446
Context: mono/mono#15503
Context: mono/mono#15541
Context: mono/mono#15551
Context: mono/mono#15556
Context: mono/mono#15596
Context: mono/mono#15691
Context: mono/mono#15692
Context: mono/mono#15740
Context: mono/mono#15751
Context: mono/mono#15760
Context: mono/mono#15781
Context: mono/mono#15794
Context: mono/mono#15825
Context: mono/mono#15853
Context: mono/mono#15878
Context: mono/mono#15887
Context: mono/mono#15990
Context: mono/mono#16032
Context: mono/mono#16411
Context: mono/mono#16486
Context: https://github.com/mono/mono/issues/25709
Context: https://github.com/mono/mono/issues/38821

Update `build-tools/automation/build.groovy` so that it fully cleans
the build tree before starting the build, so that the vestigial mono
submodule (removed in 0c9f83b) is *actually* removed from the build
tree, so that we don't inadvertently use *ancient* submodule contents.
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