CVS commit: src/lib/libc/rpc

["Kamil Rytarowski" <kamil%netbsd.org@localhost>]

Module Name:    src
Committed By:   kamil
Date:           Wed Jul 25 23:59:08 UTC 2018

Modified Files:
        src/lib/libc/rpc: xdr_rec.c

Log Message:
Avoid undefined behavior in the definition of LAST_FRAG in xdr_rec.c

Do not change the signedness bit with a left shift operation.
Switch to unsigned integer to prevent this in the LAST_FRAG symbol.

xdr_rec.c:559:39, left shift of 1 by 31 places cannot be represented in type 'int'
xdr_rec.c:572:26, left shift of 1 by 31 places cannot be represented in type 'int'
xdr_rec.c:573:25, left shift of 1 by 31 places cannot be represented in type 'int'
xdr_rec.c:632:37, left shift of 1 by 31 places cannot be represented in type 'int'
xdr_rec.c:711:32, left shift of 1 by 31 places cannot be represented in type 'int'
xdr_rec.c:722:28, left shift of 1 by 31 places cannot be represented in type 'int'

Detected with micro-UBSan in the user mode.


To generate a diff of this commit:
cvs rdiff -u -r1.36 -r1.37 src/lib/libc/rpc/xdr_rec.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.