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__DATE__ and RTX51 Tiny give link errors

Patrick Earle

This declaration

const char code* const gBuildDate = __DATE__;

gives lots of link errors when I use RTX51 Tiny but is fine without RTX.
(My program uses conditional compilation to build either a RTX or non-RTX version)
Any ideas?

Parents
  • 0 in reply to Andrew Neil 

    const char code* const gBuildDate = __DATE__;
    Don't you have too many 'const' there?

    I don't think so, it says, "gBuildDate is a const pointer to const char". Thus you cannot modify either gBuildDate or what it points to. You have to remember that 'code' is not ISO C and yet Keil still supports ISO C as much as it can.

    Without the code keyword it is more obvious:

    const char *pVar;        // pVar can be modfied but not what it points to.
char * const pVar;       // pVar cannot be modified but what it points to can.
const char * const pVar; // Neither pVar nor what it points to can be modified.
    - Mark

Reply
  • 0 in reply to Andrew Neil 

    const char code* const gBuildDate = __DATE__;
    Don't you have too many 'const' there?

    I don't think so, it says, "gBuildDate is a const pointer to const char". Thus you cannot modify either gBuildDate or what it points to. You have to remember that 'code' is not ISO C and yet Keil still supports ISO C as much as it can.

    Without the code keyword it is more obvious:

    const char *pVar;        // pVar can be modfied but not what it points to.
char * const pVar;       // pVar cannot be modified but what it points to can.
const char * const pVar; // Neither pVar nor what it points to can be modified.
    - Mark

Children
  • 0 in reply to Mark Odell

    Ok Ive realised whats wrong - I was running out of DATA space.
    If I change the declaration to this

    const char code* code gBuildDate = __DATE__;

    its OK.
    I expected since the pointer was 'const' it would automatically go into code space but apparently not, you have to use 'code'.