SUSE-SU-2019:3061-1

Description of the patch:

This update includes the GNU Compiler Collection 9.

A full changelog is provided by the GCC team on:

https://www.gnu.org/software/gcc/gcc-9/changes.html

The base system compiler libraries libgcc_s1, libstdc++6 and others are now built by the gcc 9 packages.

To use it, install 'gcc9' or 'gcc9-c++' or other compiler brands and use CC=gcc-9 / CXX=g++-9 during configuration for using it.

Security issues fixed:

• CVE-2019-15847: Fixed a miscompilation in the POWER9 back end, that optimized multiple calls of the __builtin_darn intrinsic into a single call. (bsc#1149145)
• CVE-2019-14250: Fixed a heap overflow in the LTO linker. (bsc#1142649)

Non-security issues fixed:

• Split out libstdc++ pretty-printers into a separate package supplementing gdb and the installed runtime. (bsc#1135254)
• Fixed miscompilation for vector shift on s390. (bsc#1141897)