[BUG] src/core/types.h (assignment of read-only location 'v')

[murrayhenwood]

Did you test the latest bugfix-2.1.x code?

Yes, and the problem still exists.

Bug Description

In src/core/types.h source file line 598, 599, 752 the code tries to assign to operation parameter.

the lines in question
598
FI XYZval& operator*=(const float &v) { NUM_AXIS_CODE(x *= v, y *= v, z *= v, i *= v, j *= v, k *= v, u *= v, v *= v, w *= v); return this; }
599
FI XYZval& operator=(const int &v) { NUM_AXIS_CODE(x *= v, y *= v, z *= v, i *= v, j *= v, k *= v, u *= v, v *= v, w *= v); return this; }
752
FI XYZEval& operator=(const T &v) { LOGICAL_AXIS_CODE(e *= v, x *= v, y *= v, z *= v, i *= v, j *= v, k *= v, u *= v, v *= v, w *= v); return *this; }

Bug Timeline

not sure

Expected behavior

Code to compile

Actual behavior

No response

Steps to Reproduce

1. Try to compile with 8 axis

Version of Marlin Firmware

2.1.X

Printer model

No response

Electronics

No response

Add-ons

No response

Bed Leveling

No response

Your Slicer

No response

Host Software

No response

Don't forget to include

• A ZIP file containing your Configuration.h and Configuration_adv.h.

Additional information & file uploads

No configuration needed after reading the code it should be clear about the problem

[ellensp]

How about those configs so we don't have to waste time recreating this?

yes v *= v is obvious, but so is

Don't forget to include
A ZIP file containing your Configuration.h and Configuration_adv.h.

[murrayhenwood]

Sorry, There are no boards have the pin definitions needed to show the problem and therefor there is no simple configuration and changes that could be zipped up.
This is obviously a niche problem, feel free to close the issue.

[EvilGremlin]

Then link to your fork or something. If fixing this could save us feature headaches it's worth looking at. Making Marlin more flexible and scalabe (both up and down) is ever-present goal.

[ellensp]

I working on a eg configs for an octopus, 8 axis, 0 extrudes. will be done shortly..

[murrayhenwood]

Roughly I think these are the minimum changes needed, using Platform IO for the build
https://github.com/murrayhenwood/Marlin

[ellensp]

PR #24866 should fix it

[github-actions]

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