From: neomjp neomjp <redmine@...>
Date: 2009-05-12T01:10:30+09:00
Subject: [ruby-core:23429] [Bug #1388] cygwin-1.7, gcc4-4.3, and ruby-1.9. make btest #236 test_io.rb Segmentation fault

Issue #1388 has been updated by neomjp neomjp.


On 2009/05/01 0:57, neomjp neomjp wrote:
> CC=gcc-4 configure --program-suffix="-19" --disable-pthread
> make THREAD_MODEL=w32

> 2. Objects are linked without -lpthread.

	It seems the miniruby was still using pthread even when linked
without -lpthread. The only difference in
"strings miniruby | grep -i pthread"
with/without --disable-pthread was the absence/presence of

pthread_attr_setinheritsched(&attr, PTHREAD_INHERIT_SCHED)

All other pthread functions were the same. miniruby was still
using pthread.

	So, I tried forcing the compilation of thread_win32.c by replacing
#if   defined(_WIN32)
with
#if   defined(_WIN32) || defined(__CYGWIN__)
in thread.c:172 and vm_core.h:25 (r23390), and

CC=gcc-4 configure --program-suffix="-19" --disable-pthread
make THREAD_MODEL=w32

The compilation went through to the end (with some warnings), but
"make btest" failed miserably with numerous segfaults and four test
failures.

	Hmm, now I understand that win32 thread does not work in cygwin.
I will take back my claims about the option to --disable-pthread in
cygwin-1.7. It was not the main topic of this bug, anyway.
Besides, it was a rather low-priority feature request in a non-default
setting.

Finally, an update:

* eval_intern.h: FIXED in r23317. Thanks.
* ruby.c: Nobu's fix in [ruby-core:23255] will be fine.
* strftime.c: A patch proposed in [ruby-core:23241].
* common.mk :INVALID, WONTFIX
* Segfault in #236 test_io.rb: This was what this bug was about.

--
neomjp
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