[lldb][Darwin] Read Mach-O binaries out of memory more efficiently (#200072)
When lldb needs to read a Mach-O binary out of memory, it first reads
512 bytes to get the mach header, which includes the size of the load
commands, and then does a second read to get the mach header and load
commands.
I am changing the initial read to get 3192 bytes, which will include the
full load commands for most binaries.
In April I changed debugserver to return the correct size of the mach
header and load commands in a `sizeof_mh_and_loadcmds` key. If this
number is provided, refine the amount we read to this size.
This reduces the number of memory read packets we issue from 2 to 1 for
a memory module, outside of packets that may be needed to get the symbol
table.
tmux: update to 3.6b.
CHANGES FROM 3.6a TO 3.6b
* Remove images from the correct list when they are removed while in the
alternate screen (reported by xlabai at tencent dot com).
perl: fix security problem in Archive::Tar
Archive::Tar versions before 3.10 for Perl allow memory exhaustion via
attacker controlled entry size field in tar header
Bump PKGREVISION.
net/sdl3_net: add port: Simple, cross-platform wrapper over TCP/IP sockets
This is a portable network library for use with SDL. It's goal is
to simplify the use of the usual socket interfaces and use SDL to
handle common portable functionality such as threading and reporting
errors.
[LifetimeSafety] Propagate inner origins through std::move and related casts (#199600)
std::move and related casts (std::forward, std::forward_like,
std::move_if_noexcept, std::as_const) are reference casts: the result
refers to the same object as the argument. Flow all origin levels for
this family.
Fixes #191954
syslogd: Fix ereregex property filters and add test
This change fixes Bug 293879, where ereregex filters in syslogd
did not handle alternation correctly.
The issue appears to come from mixing up two different kinds of
flags: syslogd's internal serialized filter flags in
usr.sbin/syslogd/syslogd.h, and the regex compilation flags from
include/regex.h. ereregex was storing REG_EXTENDED in cmp_flags,
even though cmp_flags is meant to carry syslogd's own FILT_FLAG_*
values for configuration serialization and reconstruction.
REG_EXTENDED has the same bit value as FILT_FLAG_EXCLUDE, so the
filter could be reconstructed with the wrong semantics.
The fix stores FILT_FLAG_EXTENDED instead, allowing syslogd to
correctly REG_EXTENDED when compiling the regex.
A test was also added for both ereregex and !ereregex filters.
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[clang] fix getTemplateInstantiationArgs
This implements a new strategy for collecting the template arguments, by
relying on the qualifiers and template parameter lists to navigate the template
context of out-of-line definitions.
This greatly simplifies the signature of that function, by removing a bunch
of workarounds, and simpliffying a couple that weren't removed yet.
Since this now relies on qualifiers and template parameter lists,
this patch expends most of its effort making sure these are placed,
transformed and propagated to template instantiations.
Also makes the explicit specialization AST nodes stop abusing the template
parameter lists by storing it's own template parameter list, creating a
dedicated field for them, similar to partial specializations.
[VectorCombine] Fold deinterleave2 with smaller effective element size (#192121)
Found in real-world code where this sequence:
```
%d = llvm.vector.deinterleave2 <vscale x 16 x i32> %v
%f0 = extractvalue { <vscale x 8 x i32>, <vscale x 8 x i32> } %d, 0
%f1 = extractvalue { <vscale x 8 x i32>, <vscale x 8 x i32> } %d, 1
%low0 = and <vscale x 8 x i32> %f0, splat (i32 65535)
%low1 = shl <vscale x 8 x i32> %f1, splat (i32 16)
%merge0 = or disjoint <vscale x 8 x i32> %low0, %low1
%high0 = and <vscale x 8 x i32> %f1, splat (i32 -65536)
%high1 = lshr <vscale x 8 x i32> %f0, splat (i32 16)
%merge1 = or disjoint <vscale x 8 x i32> %high0, %high1
```
is really just doing `deinterleave2` but on `<vscale x 32 x i16>`. That
is, the same total vector size but with half the element width. So we
can turn it into:
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