http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55763
--- Comment #6 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-12-21
22:59:27 UTC ---
To the last test case of comment 0:
> gives an ICE (segfault) at
> vector_comp => field
>
> 0x62d477 gfc_trans_pointer_assignment(gfc_expr*, gfc_expr*)
> ../../gcc/fortran/trans-expr.c:6523
The problem is that the LHS is:
expr1->symtree->n.sym->attr.subref_array_pointer
The ICE occurs for:
gfc_add_modify (&lse.post, GFC_DECL_SPAN(decl), tmp);
The problem is that DECL_LANG_SPECIFIC(decl) is NULL; hence,
DECL_LANG_SPECIFIC(decl)->span causes the ICE.
In principle, gfc_get_symbol_decl takes care of that. However, as the symbol is
a dummy argument, the backend_decl is already set and gfc_get_symbol_decl
returns early.
