The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.
When migrating from a 32-bit application to a 64-bit application, bit-shifting
operations can lead to errors. Untyped integral constants are assumed to be of type
unsigned int. During shifting, this assumption can lead to unexpected
truncation. For example, the maximum possible value of i in the following
code sample is 31 because the implicit type of 1 is unsigned
int.
long j = 1 << i;
To allow the shift to work correctly on a 64-bit system, use 1L
instead of 1:
long j = 1L << i;