On Sat, Feb 16, 2013 at 10:40:43AM +0100, Dodji Seketeli wrote:
> --- a/gcc/cfg.c
> +++ b/gcc/cfg.c
> @@ -663,6 +663,21 @@ debug_bb_n (int n)
> return bb;
> }
>
> +/* Dumps cfg related information about basic blocks, from number 'S'
> + to number E, to stderr. */
> +
> +DEBUG_FUNCTION basic_block
> +debug_bb_range (int s, int e)
> +{
> + basic_block bb = NULL;
> + for (int i = s; i <= e; ++i)
> + {
> + bb = BASIC_BLOCK (i);
> + debug_bb (bb);
At some points after cfg changes, but before cfg cleanup there might be
gaps, so I think you want if (bb) debug_bb (bb);, otherwise it could crash
in that case.
Jakub
