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TI Home » TI E2E Community » Support Forums » Development Tools » TI C/C++ Compiler » TI C/C++ Compiler - Forum » Why CCS 5.2 doesn't report a warning on unused" variables
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Why CCS 5.2 doesn't report a warning on unused" variables

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murad qahwash
Posted by murad qahwash
on May 01 2012 10:21 AM
Intellectual610 points

Tried to search eClipse help for enabling this feature but no luck...I want my code to be clean by removing all "unused variables"

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  • Archaeologist
    Posted by Archaeologist
    on May 02 2012 13:49 PM
    Verified Answer
    Verified by George Mock
    Mastermind40900 points

    By default, the compiler does warn about unused local or static global variables.  This can be disabled with the -pds179 option; make sure you are not using that option.  The compiler cannot detect unused non-static global variables.  Could you post source code that demonstrates the problem?

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  • Johannes
    Posted by Johannes
    on May 02 2012 18:32 PM
    Genius3190 points

    As Archaeologist said it's set by default, you can check if it's set going to:

    Window -> Preferences -> C/C++ -> Code Analysis -> Potential Programming Problems -> Unused variable declaration in file scope

    Regards

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  • murad qahwash
    Posted by murad qahwash
    on May 03 2012 13:56 PM
    Intellectual610 points

    Thanks guys,

    Option #179 is selected and works fine in detecting unused "Local" variables, but no option for detecting unused "global" variables!?

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  • Archaeologist
    Posted by Archaeologist
    on May 03 2012 15:14 PM
    Verified Answer
    Verified by George Mock
    Mastermind40900 points

    There is no option for detecting unused non-static globals.  Knowing whether the global is truly unused would require looking at every source file in the entire application, and the part of the compiler that does the detection can only see the one source file.

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