Hi,

On Sun, Apr 29, 2012 at 4:00 PM, Andy W. Song <wsongcn <at> gmail.com> wrote:

Hi go-nuts, 

I'm trying to debug my program using GDB but have some issues. 

GDB can pretty prints a whole slice, but when I try to print an element list 

(gdb) print a[0]

I get error message:

Structure has no component named operator[]

GDB just uses the pretty-printing mechanism for slices, but slice is actually a structure.

You should print element list of slice like a.array[0]

 

Another even stranger problem is in below program:

func (d Darts) CommonPrefixSearch(key []rune /*Key_type*/, nodePos int) (results []ResultPair) {

    b := d.Base[nodePos]

    var p int

    for i := 0; i < len(key); i++ {

        p = b

        n := d.Base[p]

        if b == d.Check[p] && n < 0 {

            results = append(results, ResultPair{i, d.ValuePool[-n-1]})

        }

        p = b + int(key[i]) + 1

        // p could be bigger than the index

        if p >= len(d.Check) {

            return results

        }

        if b == d.Check[p] {

            b = d.Base[p]

        } else {

            return results

        }

    }

    p = b

    n := d.Base[p]

    if b == d.Check[p] && n < 0 {

        results = append(results, ResultPair{len(key), d.ValuePool[-n-1]})

    }

    return results

}

When I try to print p, n or b in the for loop I got

No symbol "p" in current context.

Any idea?

 

Are you sure  inlining and optimisation are switched off ? 

 

Thanks

Andy

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