Created attachment 9438 [details]
glibc-2.24 gcc testsuites logs comparison, coredump log

Linux inode 4.7.0-1-ARCH #1 SMP PREEMPT Sat Aug 13 13:34:56 CEST 2016 x86_64 GNU/Linux

$ locale   
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=

$ locale -a
C
en_US.utf8
POSIX

Test cases:
Building firefox 48.0, gcc 6.1.0 and hello_world.c,
hello_world compiles with -fsanitize={address,memory} and without.

toolchain-23:
binutils 2.27
gcc 6.1.0
gcc-libs 6.1.0
glibc 2.23
libtool 2.4.6
linux-api-headers 4.7

Every program builds and executes without errors.

toolchain-24:
binutils 2.27
gcc 6.1.0
gcc-libs 6.1.0
- glibc 2.23
+ glibc 2.24
libtool 2.4.6
linux-api-headers 4.7

firefox 48.0 passes two build stages: build and package from clent.mk for make.
Build stage passes without errors, package stage fails.
Fails presumably due to parsing error in configuration text files, reported in Arch  FS#50231 - [firefox] cannot compile firefox 48.0 - error in client.mk

gcc 6.1.0 fails on every ASAN test.

hello_world.c -fsanitize={address,memory} programs build against 2.23 and 2.24.
Programs fail to execute with glibc 2.24, execute with 2.24.