[Mono-list] Debug.Assert - a cross-platform issue

[Ian Norton]

Oops..

Anyway.. The reason why it is false by default is that there is no
trace listener enabled by default.

You can enable it in several ways.

1. export MONO_TRACE_LISTENER=Console.Error
2. Adding one.

var tl = new System.Diagnostics.ConsoleTraceListener();
System.Diagnostics.Debug.Listeners.Add ( tl );

3. using the xml config mentioned earlier.

On 9 March 2014 10:58, "Andrés G. Aragoneses" <knocte at gmail.com> wrote:
> On 09/03/14 06:28, MarLOne wrote:
>> Hi all,
>>
>> I have found out the run time discrepancy of Debug.Assert() in CLR and in
>> Mono. The answer literally is in front of our eyes.
>>
>> The difference is in this property:
>> System.Diagnostics.DefaultTraceListener.AssertUiEnabled.
>>
>> In *CLR* the default value is *true* but in *Mono* the default value is set
>> to *false*. If you disassembly the system assembly, you will see that in
>
> By disassembling Microsoft's code, you've rendered yourself unable to
> contribute to Mono (at least around the area of the API you're talking
> about). Next time, read this first:
>
> http://www.mono-project.com/Contributing#Important_Rules
>
>
>
>> Mono, the DefaultTraceListener.Fail() already contains GUI code to report
>> the failure if the above mentioned property is true. Since the default value
>> is set to false, it does not report any failure condition.
>>
>> Hence there are two ways of fixing it:
>> 1) In code just do this (surround it with conditional compilation control) :
>> (Debug.Listeners["Default"] as DefaultTraceListener).AssertUiEnabled = true;
>>
>> 2) In a config file like this:
>> <?xml version="1.0" encoding="utf-8"?>
>> <configuration>
>>
>>   <system.diagnostics>
>>
>>        <assert assertuienabled="true" />
>>   </system.diagnostics>
>>
>> </configuration>
>>
>> This setting is superfluous in CLR but is harmless hence the same config
>> file can be used in both platform.
>>
>> If you are performing cross platform checking, make sure you include the
>> configuration setting to avoid the disappointment. This highlights the
>> importance to maintain default values consistence.
>>
>> Hope this will help and may be someone maintaining this part of the code to
>> consider restoring that consistence.
>>
>> MarL
>>
>>
>>
>> --
>> View this message in context: http://mono.1490590.n4.nabble.com/Debug-Assert-a-cross-platform-issue-tp4662174p4662183.html
>> Sent from the Mono - General mailing list archive at Nabble.com.
>> _______________________________________________
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>>
>
>
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