[src/trunk]: src/usr.bin/make/unit-tests make(1): add test for off-by-one err...

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/914261453978
branches:  trunk
changeset: 1012300:914261453978
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sun Jul 26 22:15:36 2020 +0000

description:
make(1): add test for off-by-one error in Var_Parse

diffstat:

 distrib/sets/lists/tests/mi                  |   4 +++-
 usr.bin/make/unit-tests/Makefile             |   3 ++-
 usr.bin/make/unit-tests/varparse-dynamic.exp |   4 ++++
 usr.bin/make/unit-tests/varparse-dynamic.mk  |  14 ++++++++++++++
 4 files changed, 23 insertions(+), 2 deletions(-)

diffs (61 lines):

diff -r 2fd3b93a20ae -r 914261453978 distrib/sets/lists/tests/mi
--- a/distrib/sets/lists/tests/mi       Sun Jul 26 21:47:16 2020 +0000
+++ b/distrib/sets/lists/tests/mi       Sun Jul 26 22:15:36 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.877 2020/07/26 14:22:22 riastradh Exp $
+# $NetBSD: mi,v 1.878 2020/07/26 22:15:36 rillig Exp $
 #
 # Note: don't delete entries from here - mark them as "obsolete" instead.
 #
@@ -4608,6 +4608,8 @@
 ./usr/tests/usr.bin/make/unit-tests/varmisc.mk tests-usr.bin-tests     compattestfile,atf
 ./usr/tests/usr.bin/make/unit-tests/varmod-edge.exp    tests-usr.bin-tests     compattestfile,atf
 ./usr/tests/usr.bin/make/unit-tests/varmod-edge.mk     tests-usr.bin-tests     compattestfile,atf
+./usr/tests/usr.bin/make/unit-tests/varparse-dynamic.exp       tests-usr.bin-tests     compattestfile,atf
+./usr/tests/usr.bin/make/unit-tests/varparse-dynamic.mk        tests-usr.bin-tests     compattestfile,atf
 ./usr/tests/usr.bin/make/unit-tests/varquote.exp       tests-usr.bin-tests     compattestfile,atf
 ./usr/tests/usr.bin/make/unit-tests/varquote.mk        tests-usr.bin-tests     compattestfile,atf
 ./usr/tests/usr.bin/make/unit-tests/varshell.exp       tests-usr.bin-tests     compattestfile,atf
diff -r 2fd3b93a20ae -r 914261453978 usr.bin/make/unit-tests/Makefile
--- a/usr.bin/make/unit-tests/Makefile  Sun Jul 26 21:47:16 2020 +0000
+++ b/usr.bin/make/unit-tests/Makefile  Sun Jul 26 22:15:36 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.65 2020/07/26 11:10:29 rillig Exp $
+# $NetBSD: Makefile,v 1.66 2020/07/26 22:15:36 rillig Exp $
 #
 # Unit tests for make(1)
 #
@@ -72,6 +72,7 @@
 TESTS+=                varfind
 TESTS+=                varmisc
 TESTS+=                varmod-edge
+TESTS+=                varparse-dynamic
 TESTS+=                varquote
 TESTS+=                varshell
 
diff -r 2fd3b93a20ae -r 914261453978 usr.bin/make/unit-tests/varparse-dynamic.exp
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/usr.bin/make/unit-tests/varparse-dynamic.exp      Sun Jul 26 22:15:36 2020 +0000
@@ -0,0 +1,4 @@
+make: "varparse-dynamic.mk" line 10: Malformed conditional (${.TARGXX})
+make: Fatal errors encountered -- cannot continue
+make: stopped in unit-tests
+exit status 1
diff -r 2fd3b93a20ae -r 914261453978 usr.bin/make/unit-tests/varparse-dynamic.mk
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/usr.bin/make/unit-tests/varparse-dynamic.mk       Sun Jul 26 22:15:36 2020 +0000
@@ -0,0 +1,14 @@
+# $NetBSD: varparse-dynamic.mk,v 1.1 2020/07/26 22:15:36 rillig Exp $
+
+# Before 2020-07-27, there was an off-by-one error in Var_Parse that skipped
+# the last character in the variable name.
+# To trigger the bug, the variable must not be defined.
+.if ${.TARGET}                 # exact match, may be undefined
+.endif
+.if ${.TARGEX}                 # 1 character difference, must be defined
+.endif
+.if ${.TARGXX}                 # 2 characters difference, must be defined
+.endif
+
+all:
+       @: