When shift count is the same as the length of a variable (eg, l << 32 where
long int l;), this doesn't return 0, instead it returns a rotated value.
Below is assumed to return 0, but actually returns 2468.
---t2.c---(test case)
#include <stdio.h>
long long ll;
long l;
int
main(){
l = 1234;
ll = l << 33;
printf("%lld\n", ll);
return 0;
}
--------------------
--
Summary: << (shift operator) does rotate operation
Product: gcc
Version: 3.4.6
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tetsuji dot rai at gmail dot com
GCC build triplet: ia32 Gentoo Linux
GCC host triplet: ia32 Gentoo Linux
GCC target triplet: ia32 Gentoo Linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28195
