stressLinear.cxx in 6.40.04 is broken

ROOT
1 
root \[0\] .L stressLinear.cxx+

Info in <TMacOSXSystem::ACLiC>: creating shared library...../root-6.40.04/test/./stressLinear_cxx.so

In file included from input_line_9:6:

**././stressLinear.cxx:1009:14: error: use of undeclared identifier 'is_indeed_unit'**

    ok &= ( !is_indeed_unit(m) ) ? kTRUE : kFALSE;

             **^**

**././stressLinear.cxx:1019:13: error: use of undeclared identifier 'is_indeed_unit'**

    ok &= ( is_indeed_unit(m) ) ? kTRUE : kFALSE;

            **^**

**././stressLinear.cxx:1030:13: error: use of undeclared identifier 'is_indeed_unit'**

    ok &= ( is_indeed_unit(m2) ) ? kTRUE : kFALSE;

            **^**

**././stressLinear.cxx:1041:13: error: use of undeclared identifier 'is_indeed_unit'**

    ok &= ( is_indeed_unit(m) ) ? kTRUE : kFALSE;
2

Hi Eddy,

I can confirm problem with stressLinear.cxx.
There is wrong preprocessor statement.

Fix Fix stressLinear.cxx by linev · Pull Request #23853 · root-project/root · GitHub

Regards,
Sergey