Module Name: src
Committed By: kamil
Date: Tue Jul 3 22:38:34 UTC 2018
Modified Files:
src/sys/sys: wait.h
Log Message:
Try to appease KUBSan in sys/sys/wait.h in W_EXITCODE()
Cast return value that is stored as int to unsigned int in order to
appease the << 8 operation. In case of a ret=-1, this cast is papering
things over or replacing UB with an implementation specific behavior.
There is a reverse operation with the same papering things over:
WEXITSTATUS(x) ((int)(((unsigned int)_W_INT(x)) >> 8) & 0xff)
No functional change intended.
Detected with Kernel Undefined Behavior Sanitizer.
Reported by <Harry Pantazis>
To generate a diff of this commit:
cvs rdiff -u -r1.35 -r1.36 src/sys/sys/wait.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
