In SX Microcontrollers, SX/B Compiler and SX-Key Tool, rwsenser wrote:

Hi Peter (and anyone else interested in C4SX),

 

Greetings.

 

Attached is a zip file with a test program called sxstring.h that uses the stdlib.h, sxio.h and other libraries.  I have put a small change into sxio.h that arranges the variables in memory such that the bug I found with 'static const char ...'  is not present.  I've included the sxio-x.h, which fails (if you want to see the coding difference).

 

If you have time, could you download this zip and run the sxstring.h on your SX 28?  Note that I have changed some of the string.h, stdlib.h, etc. libraries -- and sxstring.c needs these changed versions. If you have a serial I/O capability great; if not run the program under the debugger and you can see the test results in the RAM/registers.

 

I'm interested in knowing the results you get for the 8 tests -- and if any corruption or odd errors occur.

 

I've not yet heard back from the CC1B people.  In any event, the compiler bug is rather obscure and I think I can describe how to avoid it well enough that C coders can work around the issue.

 

Thanks,

RWSenser

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