CVS commit: src/bin/sh

["Robert Elz" <kre%netbsd.org@localhost>]

Module Name:    src
Committed By:   kre
Date:           Wed Jan  5 15:25:44 UTC 2022

Modified Files:
        src/bin/sh: eval.c

Log Message:
Use a volative local shadow of a field in an (on-stack) non-volatile struct
that is to be referenced after a return from setjmp() via longjmp().

This doesn't ever seem to have caused a problem, but I think using
volative vars is required here.

For reasons I never bothered to discover, even though this change
certainly requires a store into stack memory which wasn't required
before, earlier measurements showed the shell getting (slightly) smaller
with this change in place.

NFCI


To generate a diff of this commit:
cvs rdiff -u -r1.187 -r1.188 src/bin/sh/eval.c

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