https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207854
Bug ID: 207854
Summary: usr/src/sys/contrib/ncsw/Peripherals/QM/qm_portal_fqr.
c:1437: bad shift ?
Product: Base System
Version: 11.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
[usr/src/sys/contrib/ncsw/Peripherals/QM/qm_portal_fqr.c:1437]: (error)
Shifting 32-bit value by 63 bits is undefined behaviour
Source code is
for (tmpN=7 ; tmpN<64; tmpN++ )
{
tmp = ABS((int)(slope - tmpA/(1<<tmpN)));
Maybe better code
for (tmpN=7 ; tmpN<64; tmpN++ )
{
tmp = ABS((int)(slope - tmpA / (1UL << tmpN)));
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