...
> > @@ -691,6 +691,7 @@ static int regs_map(struct regs_dump *regs, uint64_t 
> > mask, char *bf, int size)
> >   {
> >     unsigned int i = 0, r;
> >     int printed = 0;
> > +   const char *reg_name;
> >
> >     bf[0] = 0;
> >
> > @@ -700,9 +701,10 @@ static int regs_map(struct regs_dump *regs, uint64_t 
> > mask, char *bf, int size)
> >     for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
> 
> a good practice is to limit scope of variables as much as possible, so
> reg_name could be declared here

I'd go for either function scope or a very small inner block
(like this one).

Otherwise it gets very difficult for the average human (or other
intelligent being) to locate the definition.

        David

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