[PATCH] Prevent LTO section collision for a symbol name starting with '*'.

[Martin Liška]

On 8/23/19 4:37 PM, Jan Hubicka wrote:
>> On 8/23/19 2:33 PM, Martin Liška wrote:
>>> So in WPA, we shift order by order_base. For streaming purpose I'll need
>>> something like symtab_node::lgen_order that will be streamer_read_hwi (ib).
>>
>> And we'll probably need to stream the original LGEN symtab_node::order
>> in order to read proper section during LTRANS. Am I right?
> 
> Well, at WPA time you know node->order and from lto_file_data you know
> how to recalculate node->order to original node->order at compile time.

How can I recalculate that? One possible solution is to store order_base
for each struct lto_file_decl_data *file_data in input_node function.

> During the section copying you can arrange it to be renamed to new
> node->order which you then stream from WPA to ltrans.

That's a nice solution. Can you please point me to the code which
does that?

And what's your opinion about section naming scheme $name.$order.$file_hash?

Thanks,
Martin

> 
> Honza
>>
>> Martin