[Bug other/67042] gcc/hwint.h:250:19: runtime error: left shift of 8589934588 by 32 places cannot be represented in type 'long int'

[mikael at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67042

--- Comment #1 from Mikael Morin <mikael at gcc dot gnu.org> ---
Author: mikael
Date: Wed Aug 19 13:42:36 2015
New Revision: 227008

URL: https://gcc.gnu.org/viewcvs?rev=227008&root=gcc&view=rev
Log:
Avoid signed left shift undefined behaviour in sext_hwi

gcc/
        PR other/67042
        * hwint.h (sext_hwi): Switch to unsigned for the left shift, and
        conditionalize the whole on __GNUC__.  Add fallback code
        depending neither on undefined nor implementation-defined behaviour.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/hwint.h