http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46770
--- Comment #51 from H.J. Lu <hjl.tools at gmail dot com> 2010-12-13 20:30:58
UTC ---
(In reply to comment #50)
>
> If gcc switches from .ctors to .init_array, it needs to make sure to generate
> the constructors in forward order within the TU, rather than backwards order
> as
> it does in the .ctors section. I didn't see anything in HJ's patch that does
> that.
>
It is handled in
static section *
get_elf_initfini_array_priority_section (int priority,
bool constructor_p)
{
section *sec;
if (priority != DEFAULT_INIT_PRIORITY)
{
char buf[18];
sprintf (buf, "%s.%.5u",
constructor_p ? ".init_array" : ".fini_array",
priority);
sec = get_section (buf, SECTION_WRITE, NULL_TREE);
}
else
sec = constructor_p ? init_array_section : fini_array_section;
return sec;
}
It uses priority, instead of MAX_INIT_PRIORITY - priority, to generate
NNNN for .init_arry.NNNN.
