[Bug c++/70617] internal compiler error: Segmentation fault

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70617

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #9)
> Ok, so
> 
>   page_table table = G.lookup;
>   uintptr_t high_bits = (uintptr_t) p & ~ (uintptr_t) 0xffffffff;
>   while (table->high_bits != high_bits)
>     table = table->next;
>   base = &table->table[0];
> 
> here we assume we never get a non-GC pointer passed to
> lookup_page_table_entry
> (which is a valid assumption).  What's p's value here?

I think that is valid assumption, so if we refer to non-GC memory from GC
memory without skip, that is where the bug is.