[Bug c++/82357] [8 Regression] bogus error: cannot bind bitfield

["trippels at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82357

--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #3)
> trippels@gcc67 ~ % cat _png.ii
> void _setjmp(int);
> void png_set_longjmp_fn();
> struct SeqBase {
>   virtual void m_fn1() {}
>   void m_fn2() { m_fn1(); }
> } a;
> void write_png() {
>   a.m_fn2();
>   try {
>     png_set_longjmp_fn();
>     _setjmp(0);
>   } catch (...) {
>   }
> }
> trippels@gcc67 ~ % ~/gcc_7/usr/local/bin/g++ -c -O2 _png.ii
> _png.ii: In function ‘void write_png()’:
> _png.ii:7:6: internal compiler error: Segmentation fault
>  void write_png() {
>       ^~~~~~~~~
> 
> #0  0x00000000013474d1 in visit_use(tree_node*) ()
> #1  0x0000000001345a55 in DFS(tree_node*) ()
> #2  0x0000000001344630 in
> sccvn_dom_walker::before_dom_children(basic_block_def*) ()
> #3  0x00000000014a8835 in dom_walker::walk(basic_block_def*) ()
> #4  0x0000000001342a98 in run_scc_vn(vn_lookup_kind) ()
> #5  0x0000000001329537 in (anonymous
> namespace)::pass_fre::execute(function*) ()
> #6  0x000000000120e434 in execute_one_pass(opt_pass*) ()
> #7  0x0000000000893ed2 in execute_pass_list(function*, opt_pass*) [clone
> .cold.77] ()
> #8  0x0000000001556441 in symbol_table::compile() ()
> #9  0x00000000010b3aff in symbol_table::finalize_compilation_unit() ()
> #10 0x000000000159b4b0 in compile_file() ()
> #11 0x0000000000f6130d in toplev::main(int, char**) ()
> #12 0x0000000000f625ab in main ()

Sorry wrong PR. Please ignore.