On Fri, Jul 25, 2014 at 01:01:11PM -0700, Linus Torvalds wrote:
> For example, gcc will not create a small stack frame with "sub
> $8,%rsp". No, what gcc does is to use a random "push" instruction.
> Fair enough, but that really makes things much harder to see. Here's
> an example:
That is because
On Fri, 25 Jul 2014 13:01:11 -0700
Linus Torvalds wrote:
> For example, gcc will not create a small stack frame with "sub
> $8,%rsp". No, what gcc does is to use a random "push" instruction.
> Fair enough, but that really makes things much harder to see. Here's
> an example:
>
> 81314
On Fri, Jul 25, 2014 at 11:29 AM, Linus Torvalds
wrote:
>
> Some simple pattern to make sure that the "sub $frame-size,%rsp" comes
> before any accesses to (%rbp) (when frame pointers are enabled)
> *might* work, but it might also end up missing things.
You're going to have a hard time doing that
On Fri, 25 Jul 2014 11:29:06 -0700
Linus Torvalds wrote:
> On Fri, Jul 25, 2014 at 7:02 AM, Steven Rostedt wrote:
> >
> > But wouldn't it be rather trivial to run a static analyzer on the final
> > vmlinux to make sure there are no red zones? I mean, you would only need
> > to read each function
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Date: Fri, 25 Jul 2014 10:55:11 +0200
Source: ppl
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Architecture: source amd64 all
Version: 1:1.1-3
Distribution: unstable
Urgency: medium
Maintainer: Debian GCC
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Greetings
Your message dated Fri, 25 Jul 2014 18:49:39 +
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Your message dated Fri, 25 Jul 2014 18:49:39 +
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On Fri, Jul 25, 2014 at 7:02 AM, Steven Rostedt wrote:
>
> But wouldn't it be rather trivial to run a static analyzer on the final
> vmlinux to make sure there are no red zones? I mean, you would only need
> to read each function and check to make sure that the offset of rbp is
> within the change
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LAST_UPDATED: Thu Jul 24 22:07:18 UTC 2014 (revision 213031)
Target: i586-linux-gnu
gcc version 4.9.1 (Debian 4.9.1-2)
Native configuration is i586-pc-linux-gnu
=== g++ tests ===
Running target unix
FAIL: g++.dg/ipa/pr61160-3.C -std=gnu++98 execution test
FAIL: g++.dg/ipa/pr611
LAST_UPDATED: Thu Jul 24 22:07:18 UTC 2014 (revision 213031)
Target: x86_64-linux-gnu
gcc version 4.9.1 (Debian 4.9.1-2)
Native configuration is x86_64-pc-linux-gnu
=== g++ tests ===
Running target unix
ERROR: tcl error sourcing
/scratch/packages/gcc/4.9/gcc-4.9-4.9.1/src/gcc/
=medium
.
* Update to SVN 20140725 (r213051) from the gcc-4_8-branch.
* Don't gzip the xz compressed testsuite logs and summaries.
Checksums-Sha1:
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On Thu, Jul 24, 2014 at 08:55:28PM -0700, Alexei Starovoitov wrote:
>
> -mno-red-zone only affected prologue emition in gcc. This part didn't
> change between the releases. So the bug is quite deep.
> What seems to be happening is that 2nd pass of instruction scheduler
> (after emit prologue and r
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Your message dated Fri, 25 Jul 2014 07:07:26 +
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