Re: patch to use gitlab runners with libasan and libubsan

The attached patches address the undefined behavior dependence for blowfish, twofish and des, and enable gitlab builds with asan and ubsan.

On Mon, 2016-02-29 at 13:29 +0100, Nikos Mavrogiannopoulos wrote:

Hello,  I've now completed enabling the undefined sanitizer for gnutls, and may be a good idea to use it for nettle to.  The following patch enables running the test suite of nettle under libasan (to detect any invalid memory accesses/writes), and the undefined sanitizer.

I've run a test build, and the libasan build succeeds but the libubsan builds fail: https://gitlab.com/gnutls/nettle/builds/773956

Its complaints are not that critical for the targetted platforms but may be nice not to rely on undefined behavior.

regards, Nikos