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uVision3/ARM watch window bug...?

Dave Sudolcan

The uVision3 IDE watch window shows the value of pString incorrectly (when stopped on a breakpoint in the "bug" function), unless pString is actually referenced in the function (by, for example, uncommenting the line "pString[0] = 0"). This is true even if the code optimizations are set to the lowest level possible.

#include <string.h>

int bug(int *nState,char *pString)
{
    *nState = 0;
//    pString[0] = 0;
    return(0);
}

void main(void)
{
    int foo = 0;
    char *bar;
    char s[] = "KEIL uVision3 for ARM\r";
    bar = s;
    bug(&foo,bar);
    while(1);
}

Please spare me from comments about not passing parameters to functions if you're not going to reference them, etc. I discovered this bug while testing some code I was prototyping, before the code actually used the parameter passed to it. I'm just trying to give some feedback to the KEIL folks so that they know about this bug.

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