Apparently, when gcc 4.9.1 sees
memcpy(x, y, n);
if (y)
then it believes `y` can be assumed to be NULL --- even if `n` turns
out to be zero --- and so the conditional can be optimized away.
I'm surprised by that rule, but it's easy enough to move the test
before the memcpy().
At Tue,
The gcc 4.9 release notes warn about this optimization:
https://gcc.gnu.org/gcc-4.9/porting_to.html
I'm surprised that this change hasn't caused more trouble for us.
At Tue, 12 Aug 2014 08:39:01 +0100, Matthew Flatt wrote:
Apparently, when gcc 4.9.1 sees
memcpy(x, y, n);
if (y)
How difficult would it be to allow the bootstrap process to use a
preexisting Racket installation? This would alleviate some of the
performance loss, for example in rebuilds by developers or in continuous
integration.
Sam
On Aug 11, 2014 11:16 PM, Matthew Flatt mfl...@cs.utah.edu wrote:
I've
Ok, let's try to do that. Is there currently a way to include packages
from 3rd party repos to the main distribution?
Vincent
At Tue, 12 Aug 2014 00:03:04 -0400,
Greg Hendershott wrote:
Being in the main repo is different from being in the distribution (and
thus automatically installed).
I think you'd have to add a dependency to the 'main-distribution' pkg,
but my guess is that that will require some work internally to make
not be a pain for people who want to build from git. If you have the
inclination, you could give it a try locally and let us know how it
goes?
Robby
On Tue,
I'm not sure how difficult it will be. It's tedious enough that the
last time I thought about it, I just left a note next to
no-cgc-needed in racket/src/racket/Makefile.in, but maybe it's
worth pursuing now.
At Tue, 12 Aug 2014 04:39:55 -0700, Sam Tobin-Hochstadt wrote:
How difficult would it be
but my guess is that that will require some work internally to make
not be a pain for people who want to build from git
Wouldn't this be the ideal case for git submodules?
~Leif Andersen
On Tue, Aug 12, 2014 at 7:55 AM, Robby Findler ro...@eecs.northwestern.edu
wrote:
I think you'd have to
We discussed the possibility git submodules last year, and I think the
consensus was that it wouldn't work well. We did attach the
native-library repo (for Mac OS X and Windows) as a submodule to the
main Racket repo, and that worked well enough, but I think it has
worked only because the
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