[Patch, Fortran] PR34186 -fdump-parse-tree fixes

[Tobias Burnus]

Dominique Dhumieres wrote:
> At revision 130537, I still see the (a?) problem with -fdump-parse-tree:
> [ibook-dhum] f90/bug% gfc -fdump-parse-tree -c pr34186.f90
> [...]
>         symtree: c_alert  Ambig 0
> f951: internal compiler error: Bus error
>   
I cannot reproduce it here with -m32 or -m64 on x86-64-linux, not even
using valgrind. Can you run it in the debugger and post (in the PR) a
backtrace? Or if possible in valgrind?

Tobias