[Bug lto/60720] clisp fails to build with -flto: internal compiler error: tree check: expected array_type, have record_type in array_ref_low_bound, at expr.c:6941

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60720

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-03-31
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's

 module_t modules[] = {
  { "clisp",
...
{ "regexp", &module__regexp__subr_tab.subrs[0], &module__regexp__subr_tab_size,
&module__regexp__object_tab[0], &module__regexp__object_tab_size, 0,
&module__regexp__subr_tab_initdata[0], &module__regexp__object_tab_initdata[0],
&module__regexp__init_function_1, &module__regexp__init_function_2,
&module__regexp__fini_function , ((void *)0) },
...

using &module__regexp__object_tab[0] (an array-ref), and declared as

extern gcv_object_t module__regexp__object_tab[];

but defined in the other module as

struct module__regexp__object_tab_t {
  gcv_object_t _object_Kboolean;
  gcv_object_t _object_Kend;
  gcv_object_t _object_Kextended;
  gcv_object_t _object_Kignore_case;
  gcv_object_t _object_Knewline;
  gcv_object_t _object_Knosub;
  gcv_object_t _object_Knotbol;
  gcv_object_t _object_Knoteol;
  gcv_object_t _object_Kreturn_type;
  gcv_object_t _object_Kstart;
  gcv_object_t _object_regexp__make_match_boa;
  gcv_object_t _object__23_28_29;
} module__regexp__object_tab;

thus no array for the actual decl.

Reduced testcase:

extern int x[];
int *foo[] = { &x[0] };

----

int x;