CVS commit: src/usr.bin/make

["Roland Illig" <rillig%netbsd.org@localhost>]

Module Name:    src
Committed By:   rillig
Date:           Sun Mar 14 16:43:31 UTC 2021

Modified Files:
        src/usr.bin/make: var.c
        src/usr.bin/make/unit-tests: var-eval-short.exp

Log Message:
make: only evaluate the ':_' modifier if the expression is needed

See var-eval-short.mk:46 for the test demonstrating this change.
Previously, the expression ${:Uword:_=VAR} was evaluated including all
its side effects even though it was in an irrelevant branch of the
condition.


To generate a diff of this commit:
cvs rdiff -u -r1.865 -r1.866 src/usr.bin/make/var.c
cvs rdiff -u -r1.1 -r1.2 src/usr.bin/make/unit-tests/var-eval-short.exp

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