Bug#1062535: gcc-14: FTBFS on arm64: ICE in decompose, at wide-int.h:1049

[Emanuele Rocca <ema@debian.org>]

Source: gcc-14
Version: 14-20240201-2
Severity: serious
Tags: sid ftbfs
User: debian-arm@lists.debian.org
Usertags: arm64

gcc-14 currently FTBFS on arm64 due to an upstream regression. Last known
working version was 20240131.

during GIMPLE pass: widening_mul
../../src/gcc/value-range-storage.cc: In member function 'void irange_storage::_ZN14irange_storage10set_irangeERK6irange.part.0(const irange&)':
../../src/gcc/value-range-storage.cc:277:1: internal compiler error: in decompose, at wide-int.h:1049
  277 | irange_storage::set_irange (const irange &r)
      | ^~~~~~~~~~~~~~
0x134ff07 wi::int_traits<generic_wide_int<wide_int_storage> >::decompose(long*, unsigned int, generic_wide_int<wide_int_storage> const&)
	../../src/gcc/wide-int.h:1049
0x13a452f wide_int_ref_storage<true, false>::wide_int_ref_storage<generic_wide_int<wide_int_storage> >(generic_wide_int<wide_int_storage> const&, unsigned int)
	../../src/gcc/wide-int.h:1099
0x13a44db generic_wide_int<wide_int_ref_storage<true, false> >::generic_wide_int<generic_wide_int<wide_int_storage> >(generic_wide_int<wide_int_storage> const&, unsigned int)
	../../src/gcc/wide-int.h:855
0x16b5353 bool wi::eq_p<generic_wide_int<wide_int_ref_storage<false, false> >, generic_wide_int<wide_int_storage> >(generic_wide_int<wide_int_ref_storage<false, false> > const&, generic_wide_int<wide_int_storage> const&)
	../../src/gcc/wide-int.h:2250