[Bug target/84945] [8 Regression] UBSAN: gcc/config/i386/i386.c:33312:22: runtime error: shift exponent 32 is too large for 32-bit type 'int'

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84945

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Apr 16 11:22:40 2018
New Revision: 259398

URL: https://gcc.gnu.org/viewcvs?rev=259398&root=gcc&view=rev
Log:
        PR target/84945
        * config/i386/cpuinfo.c (set_feature): Wrap into do while (0) to avoid
        -Wdangling-else warnings.  Mask shift counts to avoid
        -Wshift-count-negative and -Wshift-count-overflow false positives.

Modified:
    trunk/libgcc/ChangeLog
    trunk/libgcc/config/i386/cpuinfo.c