[Gc] Re: gcc 3.4 gc-test program boehm-gc/tests/test.c fails on
Hans.Boehm at hp.com
Mon Aug 16 21:38:27 PDT 2004
I had missed the other bug report.
Did you try after Bryce finished the 6.3 merge? If that still fails, I'd
like to track down the problem. I did some testing on a 2.6 Itanium
machine, but my X86 testing probably used older kernels.
If you were planning on having this patch checked into the 3.4.2 tree
we should post it on java-patches. It may be better to backport a
real patch, once we're sure we have the correct one. I think either one
is fine for 99.5% of applications, but there may be someone out there
trying to use the incremental collector by turning it on in native code.
On Mon, 16 Aug 2004, John Lumby wrote:
> Thank-you Hans. I made that change and also made the following two
> changes to the compiler itself to be consistent:
> . in gcc-3.4.1/boehm-gc/misc.c
> ifdef-out entire function GC_enable_incremental
> . in gcc-3.4.1/boehm-gc/pcr_interface.c
> change call to GC_enable_incremental() into an ABORT
> This is on the assumption that the gcc never uses this function as you
> With those changes, build ok and make check ok.
> Perhaps you could kindly confirm that these changes are ok for gcc and I can
> then install it.
> By the way, just for interest I tried building and make check'ing the gcc
> tree from cvs and it also fails in the boehm-gc test, so the changes you
> mentioned that you recently made
> (pthread_stop_world.c) are apparently not enough. I also see gcc-Bugzilla
> Bug 15812 open. (I personally am not intending to instal gcc 3.5 until it
> becomes stable release)
> ----Original Message Follows----
> From: Hans Boehm <Hans.Boehm at hp.com>
> To: John Lumby <johnlumby at hotmail.com>
> CC: gc at napali.hpl.hp.com, Hans.Boehm at hp.com
> Su bject: RE: [Gc] Re: The gcc 3.4 gc-test program boehm-gc/tests/test.c
> failson linux 2.
> Date: Sun, 15 Aug 2004 21:54:37 -0700 (PDT)
> The easiest patch may be to remove the GC_enable_incremental call around
> line 1809 in tests/test.c, or change the surrounding #if to a #if 0.
> (I'm not sure about the line number in your version, but it's the last
> such call in the file.)
> The other workaround is probably to build with --enable-parallel-mark,
> which is probably a good idea if you are targetting mostly
> On Sun, 15 Aug 2004, John Lumby wrote:
> > Thank you Hans. I extracted latest pthread_stop_world.c from the gcc
> > ( can't tell if this is the same version 6.3alpha6 you stated or newer)
> > tried
> > cd /home/gcc-build/i686-pc-linux-gnu/boehm-gc;make
> > but when compiling the new pthread_stop_world.c :
> > ___________________________________________________
> > /home/gcc-3.4.1/boehm-gc/pthread_stop_world.c: In function
> > `GC_push_all_stacks':
> > /home/gcc-3.4.1/boehm-gc/pthread_stop_world.c:269: error:
> > `GC_in_thread_creation' undeclared (first use in this function)
> > /home/gcc-3.4.1/boehm-gc/pthread_stop_world.c:269: error: (Each
> > identifier is reported only once
> > /home/gcc-3.4.1/boehm-gc/pthread_stop_world.c:269: error: for each
> > it appears in.)
> > make: *** [pthread_stop_world.lo] Error 1
> > _____________________________________________
> > I guess maybe I also need a newer header file? Where should
> > GC_in_thread_creation be defined?
> > But of course replacing this file is changing the gcc itself, not just a
> > change to the test suite. Maybe I can't (or shouldn't) do this in
> > 3.4.1 ? But I wonder if there is some simple change to my 3.4.1
> > that will let the test run correctly? E,g, would you recommend to
> > replace the entire boehm_gc dir by the one from cvs and try that? Is it
> > completely self-contained and not dependent on version of other gcc
> > directories?
> > I understand you said this incremental mode is not used in the gcc itself
> > so maybe I should ignore the error and install. but I don't like to
> > "instal" a new gcc that doesn't pass its own tests.
> > John
> > ----Original Message Follows----
> > From: Hans Boehm <Hans.Boehm at hp.com>
> > To: John Lumby <johnlumby at hotmail.com>
> > CC: gc at napali.hpl.hp.com
> > Subject: [Gc] Re: The gcc 3.4 gc-test program boehm-gc/tests/test.c fails
> > linux 2.6.7 on ix86
> > Date: Sat, 14 Aug 2004 18:29:41 -0700 (PDT)
> > I believe this was fixed by a change to signal masking in
> > pthread_stop_world.c in version 6.3alpha6. As a result, it should
> > now be fixed in the gcc trunk. I should have merged this into the
> > gcc tree earlier.
> > I don't think this actually affects normal gcj operation, since it
> > should only show up in incremental GC mode, which is not enabled for gcj.
> > Hans
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