--- Comment #3 from pluto at agmk dot net 2010-04-18 13:34 ---
Created an attachment (id=20408)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20408action=view)
some tree dumps from 4.3/4.5.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39979
--- Comment #4 from pluto at agmk dot net 2010-04-18 13:44 ---
during analysis the boost::thread::start_thread() function which causes
invalid writes detected by valgrind i've noticed that gcc-4.5 generates
bigger and more complex code of this function with few more lock'ed opcodes.
--- Comment #5 from rguenth at gcc dot gnu dot org 2010-04-18 18:30 ---
(In reply to comment #4)
during analysis the boost::thread::start_thread() function which causes
invalid writes detected by valgrind i've noticed that gcc-4.5 generates
bigger and more complex code of this
--- Comment #6 from pluto at agmk dot net 2010-04-18 19:01 ---
Created an attachment (id=20413)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20413action=view)
testcase.#0.
--
pluto at agmk dot net changed:
What|Removed |Added
--- Comment #7 from pluto at agmk dot net 2010-04-18 19:04 ---
(In reply to comment #5)
(In reply to comment #4)
during analysis the boost::thread::start_thread() function which causes
invalid writes detected by valgrind i've noticed that gcc-4.5 generates
bigger and more complex
--- Comment #8 from pluto at agmk dot net 2010-04-18 20:28 ---
debbuging 4.3 vs 4.5 start_thread() shows different results:
4.3:
182x void thread::start_thread()
183x {
184x thread_info-self=thread_info;
185tint const res =
--- Comment #9 from rguenth at gcc dot gnu dot org 2010-04-18 20:32 ---
(In reply to comment #8)
debbuging 4.3 vs 4.5 start_thread() shows different results:
4.3:
182x void thread::start_thread()
183x {
184x thread_info-self=thread_info;
185tint const
--- Comment #10 from rguenth at gcc dot gnu dot org 2010-04-18 20:33
---
Oh, and does it fail with http://gcc.gnu.org/bugzilla/attachment.cgi?id=20394
applied?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39979
--- Comment #2 from pluto at agmk dot net 2010-04-17 13:58 ---
ok, i've tested the boost-1.42.0 libs with the application and
different compiler configuration (4.3/4.4/4.5) and now i'm sure
that libboost-thread.a is broken by 4.4/4.5. i'll dump gcc trees
from that library and compare
