https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43374
--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Roman Kononov from comment #3)
> This looks related.
>
> $ cat test.c
> _Decimal64 func() {
> return 9e384dd + 9e384dd;
> }
>
> $ gcc -c test.c
> test.c: In function 'func':
> test.c:2:3: internal compiler error: in decimal_to_decnumber, at dfp.c:115
> ...
That was fixed in GCC 4.7 by r0-108662-ge7f7802150169b (which was PR 48928).
