[test] Add MC relaxation stretch tests (#191118)
Verify:
- ARM tLDRpci instructions don't spuriously widen to t2LDRpci when
upstream branches relax, which would push cbz targets out of range.
This would catch the #184544 regression.
- CSKY lrw16 instructions don't spuriously widen to lrw32 when
upstream branches relax. Similar to ARM.
ui: use space in apply box for the apply reminder
We could extend this a bit if we want to go this way.
It's the best way to use existing space and move the
message to where it matters most -- the apply button
itself.
I'm not entirely sure about coloring. We could instead
make the whole box change color similar to what alerts
are doing.
pull across genmatch.cc fixes from newer gcc / netbsd 11's gcc 12.
Ports for changes from mainline that reduces the size of the output
of genmatch.cc consumers by about 1/3rd, and similar savings in
compiling this file (which is the longest single compile for GCC.)
hashes from GCC git:
75cda3be0232f745cda4e177d514f6900390af0b
580cda3c2799b1f8323af770e52f1eb0fa204718
e487fcc0f7466ea663a0fea52076337bebd42b8b
c0ce29bc1ce329001b6c02bb3d34bcbb086e1b72
also see:
https://mail-index.netbsd.org/source-changes/2026/03/27/msg161209.html
tested on amd64, arm64, sparc, and powerpc. should also help vax,
but i haven't gotten there yet. mostly, this makes it possible to
build gcc12 on smaller hosts, by reducing the max-size needed for
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[orc-rt] Simplify notification service construction in Session. NFC. (#191113)
We can replace the addNotificationService method with a call to the
generic createService method that was introduced in 98ccac607a9ff.
[Clang] [MinGW] Handle `-nolibc` argument (#182062)
This implementation differs from GCC, but arguably more in line with
Unix systems, because it stops linking of default Win32 system
libraries.
On GCC it works like this:
```
❯ /ucrt64/bin/gcc -### /dev/null -nolibc 2>&1 | tr ' ' '\n' | rg '^\-l' | sort -u
-lgcc
-lgcc_eh
-lkernel32
-lmingw32
-lmingwex
-lmsvcrt
❯ /ucrt64/bin/gcc -### /dev/null 2>&1 | tr ' ' '\n' | rg '^\-l' | sort -u
-ladvapi32
-lgcc
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[orc-rt] Add comment about Session::waitForShutdown usage. NFC. (#191111)
Add a warning not to call Session::waitFromShutdown from on-detach or
on-shutdown handlers.
libunistring: update to 1.4.2.
New in 1.4.2:
* Fixed a build failure on systems with glibc 2.43.
New in 1.4.1:
* Fixed a compilation error in C++ mode.
New in 1.4:
* The data tables and algorithms have been updated to Unicode version 17.0.0.
* Fixed a bug: The functions u*_grapheme_next and u*_grapheme_prev did not
work right for strings with Indic characters, Emojis, or regional indicators.
New in 1.3:
* The data tables and algorithms have been updated to Unicode version 16.0.0.
* New function
uc_is_property_modifier_combining_mark
and new constant
UC_PROPERTY_MODIFIER_COMBINING_MARK.
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png: update to 1.6.57.
Version 1.6.57 [April 8, 2026]
Fixed CVE-2026-34757 (medium severity):
Use-after-free in `png_set_PLTE`, `png_set_tRNS` and `png_set_hIST`
leading to corrupted chunk data and potential heap information disclosure.
Also hardened the append-style setters (`png_set_text`, `png_set_sPLT`,
`png_set_unknown_chunks`) against a theoretical variant of the same
aliasing pattern.
(Reported by Iv4n <Iv4n550 at users.noreply.github.com>.)
Fixed integer overflow in rowbytes computation in read transforms.
(Contributed by Mohammad Seet.)
[orc-rt] Add ScheduleShutdownFromOnDetachHandler unit test. (#191110)
This test checks that it's safe to call Session::shutdown from an
on-detach handler, and that:
1. The Session does proceed to shut down.
2. All on-detach handlers run before any on-shutdown handlers.
