toolchain: musl: Update to version 1.2.3

Changes:
new features:
- qsort_r function (POSIX-future)
- pthread_getname_np extension function
- hard float on SPE FPU for powerpc-sf
- SEEK_DATA and SEEK_HOLE exposed in unistd.h (Linux extensions)

compatibility:
- free now preserves errno (POSIX-future requirement)
- setjmp is declared explicitly with returns_twice for non-GCC compilers
- macro version of isascii is no longer defined for C++
- dynamic linker now tolerates zero-length LOAD segments
- epoll_[p]wait is now a cancellation point
- pwd/grp functions no longer fail on systems without AF_UNIX support
- POSIX TZ parsing is stricter to allow more names to fallback to files
- NULL is now defined as nullptr when used in C++11 or later
- gettext now accepts null pointer as argument

bugs fixed:
- old regression in wcwidth of Hangul combining (vowel/final) letters
- duplocale used wrong malloc when malloc was replaced (1.2.2 regression)
- fmaf rounded wrong on archs without FE_TOWARDZERO (all softfloat archs)
- popen didn't honor requirement not to leak other popen pipe fds to child
- aligned_alloc and variants crashed on allocation failure
- dl_iterate_phdr reported incorrect module TLS pointers
- mishandling of some inputs in acoshf and expm1f and functions using them
- potentially wrong-sign zero in cproj functions at infinity
- multiple bugs in legacy function cuserid
- minor posix_spawn file actions API conformance issues
- pthread_setname_np fd leak
- out-of-bound read in zoneinfo handling with distant-past times
- out-of-tree builds lacked generated debug cfi for x86 asm

arch-specific bugs fixed:
- powerpc (32-bit) struct shmid_ds layout was wrong for some fields
- time64 struct layout was wrong in sound ioctl fallback (32-bit archs)

In addition it contains the following improvements:
* protect stack canary from leak via read-as-string by zeroing second byte
* fix excessively slow TLS performance on some mips models

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Rui Salvaterra <rsalvaterra@gmail.com>
Tested-by: Rui Salvaterra <rsalvaterra@gmail.com>
Tested-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
(cherry picked from commit 685ae2687b)

toolchain/musl/common.mk

@@ -8,12 +8,12 @@ include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/target.mk
 
 PKG_NAME:=musl
-PKG_VERSION:=1.2.2
+PKG_VERSION:=1.2.3
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://musl.libc.org/releases/
-PKG_HASH:=9b969322012d796dc23dda27a35866034fa67d8fb67e0e2c45c913c3d43219dd
+PKG_HASH:=7d5b0b6062521e4627e099e4c9dc8248d32a30285e959b7eecaa780cf8cfd4a4
 
 LIBC_SO_VERSION:=$(PKG_VERSION)
 PATCH_DIR:=$(PATH_PREFIX)/patches

toolchain/musl/patches/110-read_timezone_from_fs.patch

@@ -1,6 +1,6 @@
 --- a/src/time/__tz.c
 +++ b/src/time/__tz.c
-@@ -31,6 +31,9 @@ static int r0[5], r1[5];
+@@ -32,6 +32,9 @@ static int r0[5], r1[5];
  static const unsigned char *zi, *trans, *index, *types, *abbrevs, *abbrevs_end;
  static size_t map_size;
  
@@ -10,7 +10,7 @@
  static char old_tz_buf[32];
  static char *old_tz = old_tz_buf;
  static size_t old_tz_size = sizeof old_tz_buf;
-@@ -132,6 +135,15 @@ static void do_tzset()
+@@ -133,6 +136,15 @@ static void do_tzset()
  		"/usr/share/zoneinfo/\0/share/zoneinfo/\0/etc/zoneinfo/\0";
  
  	s = getenv("TZ");