https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77773
--- Comment #5 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
simple_type_specificer() is dereferencing a NULL result from
c_common_type_for_mode and segfaulting:
int prec = TYPE_PRECISION (t);
if (ALL_FIXED_POINT_MODE_P (TYPE_MODE (t)))
t = c_common_type_for_mode (TYPE_MODE (t), TYPE_SATURATING (t));
else
t = c_common_type_for_mode (TYPE_MODE (t), TYPE_UNSIGNED (t));
if (TYPE_NAME (t))
The type in question is:
<real_type 0x7fffefdeb150 HF
size <integer_cst 0x7fffefd002a0 type <integer_type 0x7fffefcf0150
bitsizetype> constant 16>
unit size <integer_cst 0x7fffefd002b8 type <integer_type 0x7fffefcf00a8
sizetype> constant 2>
align 16 symtab 0 alias set -1 canonical type 0x7fffefdeb150 precision 16
pointer_to_this <pointer_type 0x7fffefeab7e0>>
which corresponds to HFmode, which AFAICT does not have a type by design.
The attached patch fixes the problem.
