Log Message:
valgrind: updated to 3.20.0

Release 3.20.0 (24 Oct 2022)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This release supports X86/Linux, AMD64/Linux, ARM32/Linux, ARM64/Linux,
PPC32/Linux, PPC64BE/Linux, PPC64LE/Linux, S390X/Linux, MIPS32/Linux,
MIPS64/Linux, ARM/Android, ARM64/Android, MIPS32/Android, X86/Android,
X86/Solaris, AMD64/Solaris, AMD64/MacOSX 10.12, X86/FreeBSD and
AMD64/FreeBSD.  There is also preliminary support for X86/macOS 10.13,
AMD64/macOS 10.13 and nanoMIPS/Linux.

* ==================== CORE CHANGES ===================

* The option "--vgdb-stop-at=event1,event2,..." accepts the new value \ 
abexit.
  This indicates to invoke gdbserver when your program exits abnormally
  (i.e. with a non zero exit code).
* Fix Rust v0 name demangling.
* The Linux rseq syscall is now implemented as (silently) returning ENOSYS.
* Add FreeBSD syscall wrappers for __specialfd and __realpathat.
* Remove FreeBSD dependencies on COMPAT10, which fixes compatibility with
  HardenedBSD
* The option --enable-debuginfod=<no|yes> [default: yes] has been added on
  Linux.
* More DWARF5 support as generated by clang14.

* ==================== FIXED BUGS ====================

The following bugs have been fixed or resolved.  Note that "n-i-bz"
stands for "not in bugzilla" -- that is, a bug that was reported to us
but never got a bugzilla entry.  We encourage you to file bugs in
bugzilla (https://bugs.kde.org/enter_bug.cgi?product=valgrind) rather
than mailing the developers (or mailing lists) directly -- bugs that
are not entered into bugzilla tend to get forgotten about or ignored.

131186  writev reports error in (vector[...])
434764  iconv_open causes ld.so v2.28+ to use optimised strncmp
446754  Improve error codes from alloc functions under memcheck
452274  memcheck crashes with Assertion 'sci->status.what == SsIdle' failed
452779  Valgrind fails to build on FreeBSD 13.0 with llvm-devel (15.0.0)
453055  shared_timed_mutex drd test fails with "Lock shared failed" message
453602  Missing command line option to enable/disable debuginfod
452802  Handle lld 9+ split RW PT_LOAD segments correctly
454040  s390x: False-positive memcheck:cond in memmem on arch13 systems
456171  [PATCH] FreeBSD: Don't record address errors when accessing the \ 
'kern.ps_strings' sysctl struct
n-i-bz  Implement vgdb invoker on FreeBSD
458845  PowerPC: The L field for the dcbf and sync instruction should be
        3 bits in ISA 3.1.
458915  Remove register cache to fix 458915 gdbserver causes wrong syscall return
459031  Documentation on --error-exitcode incomplete
459477  XERROR messages lacks ending '\n' in vgdb