tree 120a35f8695d8466b9707e7cbef63c56b6a249b4
parent b97e44b130eb2e038747ba61489d0cb67cbfa020
author florian <florian@a5019735-40e9-0310-863c-91ae7b9d1cf9> 1426004039 +0000
committer florian <florian@a5019735-40e9-0310-863c-91ae7b9d1cf9> 1426004039 +0000

Add support for building with -fsanitize=undefined.
- add configure option --enable-ubsan 
- add __ubsan helpers (by Julian)

This requires gcc 4.9.2 or later. Not all platforms are supported, though.
With this change and VEX r3099 regression tests pass on amd64
with a valgrind compiled with -fsanitize=undefined.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14995 a5019735-40e9-0310-863c-91ae7b9d1cf9