why are few gcc graph output files incorrect ?

[tys lefering]

>> noticed there are few files with syntax error when running checks
> I have no idea.  You can try filing a gcc bug report for this, but the
> most likely way to fix this is probably going to be for you to dig
> into the code and figure out what is going wrong.
looked closer at gcc/graph.c and made a fix in it,
see the attachment.

it appears in gcc/graph.c print_rtl_graph_with_bb()
sometimes called end_bb() without a start_bb() and
this results in a extra '}' in the output generating
the parse error in the output graph.

now in graph.c added a check on this and the output
graph is oke.

for some reason basic blocks in functions sometimes
starts at 4 or 5 and not at 2, dont know why.

is there a maintainer for this graph.c or is it
better to add a bug report on this ?

thanks, tys
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