GNU Tools Weekly News Week 13 (November 23, 2025)

[GNU Tools weekly]

GNU Tools Weekly News Week 13 (November 23, 2025)

Release updates for GNU toolchain:
 * GDB 17.1 release update -- 2025-11-22
  * https://inbox.sourceware.org/gdb-patches/aSE5Jqxw39FQXNJi@adacore.com/T/#u
 * GCC 16.0.0 Status Report (2025-11-17), Stage 3 in effect NOW
  * https://inbox.sourceware.org/gcc/4s6800n3-43n8-n0qq-2105-2n643027q69n@fhfr.qr/T/#u

General/big GNU toolchain news (including sourceware news):
 * The GCC Steering Committee has a wiki page detailing their mission
and current requests are listed
  ** https://gcc.gnu.org/wiki/gcc-steering-committee
 * Improving GCC Buffer Overflow Detection for C Flexible Array
Members (Oracle blog)
  * https://lwn.net/Articles/1047547/
  * https://blogs.oracle.com/linux/improving-gcc-buffer-overflow-detection-for-c-flexible-array-members
* Algol 68 Front End for GCC has been approved by the GCC SC for
inclusion in the GCC trunk
 * https://inbox.sourceware.org/gcc/CAGWvnymiaXpikeXM6yNoK5kgs1u07z1dxy1HemJhMBAGDSKDCg@mail.gmail.com/T/
 * With a new set of patches posted:
https://gcc.gnu.org/pipermail/gcc-patches/2025-November/701589.html
* LLVM 2025 US dev conf videos released
 * https://www.youtube.com/@LLVMPROJ/videos
* Reminder: GCC (GNU Toolchain) dev room at FOSDEM 2026, January
31-Februrary 1, Brussels, Belgium - Calls for proposals
  ** https://inbox.sourceware.org/gcc/875xparmhn.fsf@kataplop.net/
* gccrs October 2025 Monthly report
 * https://inbox.sourceware.org/gcc/97702866-8e34-4366-a711-92b42643da78@embecosm.com/T/#u

GCC commits:
 * aarch64: Add preserve_none attribute support (forgot from last week)
 * Code changes to be able to compile GCC with -std=c++20
 * Add testcases for CWG3045 and CWG3061 (C++26 expansion statements
clarifications; already implemented)
 * Add testcases for CWG3079 (anonymous union clarifications; already
implemented)
 * 14 GCC Rust merge
 * 17 and 13 commit Ada merges
 * Implement C++ DR1670 and LWG4468
 * libstdc++: Implement proposed resolution of LWG4477
 * x86: Add AVX10.1, AVX10.2, APX_F and MOVRS to Nova Lake
 * Support the Wild linker with -fuse-ld=wild
 * middle-end: add target hook for isel
  * Can be used by the target to optimize some gimple sequences into
other sequences right before expansion to RTL (usually for say target
intrinsics but could be used otherwise)
* ipa: Remove LTO requirement for builtin callback carriers
 * e.g. CCP into -fopenmp outlined regions don't need -flto to work any more
* Enable LRA for pa-risc (hppa) by default
* libstdc++: Implement LWG 4406 and LWG 3424 for std::optional and std::expected

 GCC bugzilla stats
 * 110 new issues filed
 * 92 issues closed

glibc commits:
 * math: Remove ldbl-96 fma implementation
  * 2-4x improvement on modern HW
 * Remove support for TX lock elision of pthread mutexes (x86, s390 and ppc)
  * https://lwn.net/Articles/534758/ was about when this support was added
 * Sync acosh and atanh from CORE-MATH
 * Implement C23 const-preserving standard library macros

binutils/gdb commits:
 * Enabling of FPMR register support for AArch64 in
gdb/gdbserver/corefile on Linux
  * FP control register for FP8 support
 * ld:Treat symbols with version index 0 as unversioned
 * New tool for converting gmon.out file (old style) to gprofng experiments

binutils discussion:
 * `## __VA_ARGS__` usage (can be used) in libctf
 * https://inbox.sourceware.org/binutils/875xb052db.fsf@esperi.org.uk/T/#m268d35f226de94550b9cfa01a9d61f013d11ff0a