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Using 'strnlen' or 'strnlen_s' with MDK AC6

diverger Zhang

Hi,

I tried to use 'strnlen' or 'strnlen_s' in MDK, no matter what 'Language C' standard I choose, the compiler throws

" warning: implicit declaration of function 'strnlen_s' is invalid in C99 [-Wimplicit-function-declaration]"

So, any method to eliminate this warning?

Thanks.

Parents
  • 0 in reply to diverger Zhang

    strnlen_s is defined in C11, but the implementation is not available in either ARMCC or ARMCLANG in MDK 5.33. At least, it's not defined in any of the header files that ship with the compilers.

    strnlen isn't defined either. And neither function is mentioned in the C/C++ Libraries book.

Reply
  • 0 in reply to diverger Zhang

    strnlen_s is defined in C11, but the implementation is not available in either ARMCC or ARMCLANG in MDK 5.33. At least, it's not defined in any of the header files that ship with the compilers.

    strnlen isn't defined either. And neither function is mentioned in the C/C++ Libraries book.

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