Module Name:    src
Committed By:   mlelstv
Date:           Sun Mar 13 10:07:22 UTC 2016

Modified Files:
        src/sys/kern: subr_autoconf.c

Log Message:
gcc silently optimizes away a != NULL check if a pointer has been
used before.

- assert that old size == 0 or old pointer valid
- check for size instead
- rewrite array splice operation with simple loops instead of memcpy/memset.


To generate a diff of this commit:
cvs rdiff -u -r1.239 -r1.240 src/sys/kern/subr_autoconf.c

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

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