[PATCH] fix PR sanitizer/55617

[Ian Lance Taylor]

On Wed, Feb 6, 2013 at 7:44 AM, Jack Howarth <howarth@bromo.med.uc.edu> wrote:
> On Wed, Feb 06, 2013 at 07:36:06AM -0800, Ian Lance Taylor wrote:
>> On Wed, Feb 6, 2013 at 7:14 AM, Alexander Potapenko <glider@google.com> wrote:
>> >
>> > I understand and fully support your desire for intra-module ctor/dtor priority.
>> > My comment was meant to reply to Mike (sorry for top-posting it,
>> > again), who, as far as I understood him, wanted to see full
>> > init_priority support on Darwin, which IIUC can't be implemented
>> > without the proper linker support. LTO may help as a bandaid, but I
>> > don't think this solution scales well enough yet.
>>
>> It could be done using collect2.  Though it would be a bit tedious to write.
>
> Ian,
>     Don't you need assembler support for the constructor init priorities to be
> called in the correct order when they reside in static or shared libraries?
> I couldn't puzzle out how collect2 can help with that issue.

collect2 sees the whole link.  It can gather all the constructors
together and sort them.

Ian