[Bug sanitizer/58413] ubsan constant folding

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58413

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
A patch with the testcase for the bit-field issue has been posted:
http://gcc.gnu.org/ml/gcc-patches/2013-09/msg01212.html