Draft: Make the 'lagrange' parameter of 'vec_jac' const

[osander1]

It is the adjoint vector of a reverse sweep, and should not be changed.

For some reason this vector is changed once, though: It is overwritten by zeros in fo_rev.c:742. That needs to be understood/fixed before this MR can be merged.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ TimSiebert1
❌ osander1
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[codecov]

Codecov Report

Attention: Patch coverage is 12.50000% with 35 lines in your changes missing coverage. Please review.

Project coverage is 74.88%. Comparing base (dae263b) to head (fad93ba).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
ADOL-C/src/interfacesf.cpp	0.00%	10 Missing ⚠️
ADOL-C/src/interfaces.cpp	0.00%	9 Missing ⚠️
ADOL-C/src/fortutils.cpp	0.00%	6 Missing ⚠️
ADOL-C/src/forward_partx.cpp	0.00%	5 Missing ⚠️
ADOL-C/src/fo_rev.cpp	50.00%	2 Missing ⚠️
ADOL-C/src/uni5_for.cpp	0.00%	2 Missing ⚠️
ADOL-C/src/ho_rev.cpp	75.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #91   +/-   ##
=======================================
  Coverage   74.87%   74.88%           
=======================================
  Files          57       57           
  Lines       30610    30612    +2     
  Branches     1888     1888           
=======================================
+ Hits        22920    22923    +3     
+ Misses       7690     7689    -1     

Flag	Coverage Δ
unittests	74.88% <12.50%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.