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New error using v5.1 (upgraded from v4.2)

Robert Lane
Expert 1225 points


I recently upgraded from v4.2 to v5.1 and have been trying to build my projects on the new version.  I noticed that I get a new error that I did not get on the previous version.  Whenever I have a case where I set a variable equal to itself, ie target_position = target_position, I now get an error stating:

"Assignment to itself 'target_position = target_position'

Is there any compiler/linker option I can set to mitigate this?  This has never been a problem with my code on the previous version and I don't really want to have to rewrite all my projects to account for this.

 

Thanks!

Dustin

  • 0
    TI__Guru**** 171309 points

    Dustin,

    This is not a compiler error, but instead an C-syntax error checker built into Eclipse. The syntax checker can be configured by right-clicking on the project --> Build Options --> click on Show Advanced Settings --> C/C++ General --> Code Analysis. It can also be completely disabled by going to the submenu Launching and then unchecking the box Run as you type (selected checkers). 

    However, I have a question: why are you assigning variables to themselves? Are you trying to establish points in your code to place breakpoints?

    If so, you could also use the asm("  NOP");

    That last option has one advantage: the optimizer (if used) leaves it alone. 

    Hope this helps,

    Rafael

  • 0 in reply to desouza
    Expert 1225 points

    Rafael,

    Thanks! That worked out well.  As to your question, there are some places in my code where I write values to flash.  To my understanding, each time I write to a flash block, I have to essentially re-write the entire block plus whatever addition I want to make.  Under some circumstances I want to update a particular variable when writing to flash, but under other circumstances, I want to keep it the same.  For the latter, there is some legacy code that simply sets a variable equal to itself to fulfill this task.  This method seems to work fine and as it does, I didn't want to go back and create "copied" variables for all these occasions in past versions of the code unless I really needed to.

    Thanks again,

    Dustin