Compiler: Uninitialized Local Variables in a structure do not throw warning.

Vishwanath Reddy

Mastermind 19025 points

Tool/software: TI C/C++ Compiler

Hi team,

I recently observed an issue with uninitialzed local variables. Whenever there is a local variable declared and is used without initializing, compiler throws a warning "#551-D Variable "xx" is used before its value is set". The same is not reported for a structure. If some of the elements of a structure are initialzed and some are not initialized ard are used, compiler doesn't throw up any warning.

I observed this on compilers arm_15.12.2.STS and ti-cgt-arm_5.2.5.

Kindly check this and let us know if you agree.

Thanks and Regards,

Vishwanath Reddy.

over 6 years ago

0 Vishwanath Reddy over 6 years ago

TI__Mastermind 19025 points

Hi,

Correction in above email. Compiler version is arm_15.12.2.LTS

0 Vishwanath Reddy over 6 years ago in reply to Vishwanath Reddy

TI__Mastermind 19025 points

Hi,

One more correction: We are passing the structure as an argument to function. The called function uses the uninitialized structure element.

0 George Mock over 6 years ago in reply to Vishwanath Reddy

TI__Guru**** 232900 points

Vishwanath Reddy said:
We are passing the structure as an argument to function. The called function uses the uninitialized structure element.

Unfortunately, this is beyond the capability of the static analysis performed by the TI compiler. A web search on the term static code analysis shows many other articles and tools on this topic. Perhaps one of those tools can perform this analysis.

Thanks and regards,

-George

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Compiler: Uninitialized Local Variables in a structure do not throw warning.