This doesn't address the deeper problem, but we could also simplify the
whole function by just doing:
static size_t
find_common_mask(size_t val1, size_t val2)
{
size_t mask = ~0;
size_t diff = val1 ^ val2;
while (diff & mask)
mask <<= 1;
return mask;
}
Bit twiddli
This doesn't address the deeper problem, but we could also simplify the
whole function by just doing:
static size_t
find_common_mask(size_t val1, size_t val2)
{
size_t mask = ~0;
size_t diff = val1 ^ val2;
while (diff & mask)
mask <<= 1;
return mask;
}
Bit twiddli
On Tue, Oct 26, 2004 at 03:21:18PM +0200, Leopold Toetsch wrote:
> Nicholas Clark wrote:
>
> >The for loop inside trace_mem_block steps right over it. This if fails:
> >
> >/* Do a quick approximate range check by bit-masking */
> >if ((ptr & mask) == prefix || !prefix) {
>
> Argh
On Tue, Oct 26, 2004 at 03:21:18PM +0200, Leopold Toetsch wrote:
> Nicholas Clark wrote:
>
> >The for loop inside trace_mem_block steps right over it. This if fails:
> >
> >/* Do a quick approximate range check by bit-masking */
> >if ((ptr & mask) == prefix || !prefix) {
>
> Argh
Nicholas Clark wrote:
> The for loop inside trace_mem_block steps right over it. This if fails:
>
> /* Do a quick approximate range check by bit-masking */
> if ((ptr & mask) == prefix || !prefix) {
Argh, yes. I have pointed out quite a time ago that this mask check
isn't ok. Sm
Nicholas Clark wrote:
The for loop inside trace_mem_block steps right over it. This if fails:
/* Do a quick approximate range check by bit-masking */
if ((ptr & mask) == prefix || !prefix) {
Argh, yes. I have pointed out quite a time ago that this mask check
isn't ok. Small and big
On Tue, Oct 26, 2004 at 10:44:35AM +0200, Leopold Toetsch wrote:
> Nicholas Clark <[EMAIL PROTECTED]> wrote:
>
> > I have evidence that DOD runs can miss noticing local variable pointers to
> > live objects on x86 Linux. This is happening while running ponie, but
> > the problem is during a single
On Tue, Oct 26, 2004 at 10:44:35AM +0200, Leopold Toetsch wrote:
> Nicholas Clark <[EMAIL PROTECTED]> wrote:
>
> > I have evidence that DOD runs can miss noticing local variable pointers to
> > live objects on x86 Linux. This is happening while running ponie, but
> > the problem is during a single
Nicholas Clark <[EMAIL PROTECTED]> wrote:
> I have evidence that DOD runs can miss noticing local variable pointers to
> live objects on x86 Linux. This is happening while running ponie, but
> the problem is during a single call to string_make. The gdb traces are from
> a copy of the parrot source
Nicholas Clark <[EMAIL PROTECTED]> wrote:
> I have evidence that DOD runs can miss noticing local variable pointers to
> live objects on x86 Linux. This is happening while running ponie, but
> the problem is during a single call to string_make. The gdb traces are from
> a copy of the parrot source
# New Ticket Created by Nicholas Clark
# Please include the string: [perl #32137]
# in the subject line of all future correspondence about this issue.
# http://rt.perl.org:80/rt3/Ticket/Display.html?id=32137 >
---
osname= linux
osvers= 2.4.21-14.elsmp
arch= i386-linux-thread-multi
cc= g
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