[Bug target/46770] Replace .ctors/.dtors with .init_array/.fini_array on targets supporting them

[mark at codesourcery dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46770

--- Comment #62 from Mark Mitchell <mark at codesourcery dot com> 2010-12-14 15:17:25 UTC ---
> Having everyone with knowledge of static construction alerted, can't we use the
> GNU constructor priorities to solve PR44952?

The two constraints are:

(a) priorities aren't supported on all systems, so we need to have a
fall-back mechanism

(b) we need to document which range of priorities we're reserving for
libstdc++

On RTOS platforms, high priorities are also used for things like C
library initialization and even for device initialization.

Thank you,