AutoCAD Crash when using MODEMACRO

[Udo_Huebner]

When using MODEMACRO with specific Textvalues, AutoCAD crashes immediately.

Only if interested in crashing AutoCAD, start

Command: _MODEMACRO $(getenv, "ACAD")

Tested  with
AutoCAD Mechanical 2019
AutoCAD Civil 3D 2021.1

[cheryl.buck]

Hi @Udo_Huebner,

Thank you for posting. I tested the _MODEMACRO command in versions 2017-2021, it seems to be working correctly.

When I enter your string, I also see a crash. The subsequent report indicates that the string is invalid, can you tell me more about the string you are entering and how you are using it?  

All the best,

[Udo_Huebner]

Hi Cheryl, I tested some DIESEL menu settings for a forum question with MODEMACRO, and I got several crashes.

I know 

_MODEMACRO $(getenv, "ACAD") is an invalid expression, but hey, AutoCAD should not crash

Even if I use a valid expression with a valid environment variable (without "), AutoCAD crashes.

_MODEMACRO $(getenv, ACAD)

I only wanted to document this unwanted behaviour in a public forum so that others can find this information if a similar behaviour occurs on their site.

If you log this to the development team hopefully this bug get fixed in future. Its only a minor bug, but now its documented.

[cheryl.buck]

Hi @Udo_Huebner,

Thanks for the added information. I did some additional testing and reached out to the product team. 

The crash appears to be occurring due to the specific Diesel contents,  "ACAD" which is not a valid variable for this command, along with "AutoCAD" and "CAD". I understand that a crash is possible and expected with certain expressions because Diesel accesses the application directly.  When I choose a different variable, it does not crash.  

Do you get the same?

All the best,