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[src/trunk]: src/usr.bin/make/unit-tests make(1): add test for wrong error in...



details:   https://anonhg.NetBSD.org/src/rev/2acd9d98c889
branches:  trunk
changeset: 938797:2acd9d98c889
user:      rillig <rillig%NetBSD.org@localhost>
date:      Mon Sep 14 21:52:49 2020 +0000

description:
make(1): add test for wrong error in lint mode for undefined variable

diffstat:

 usr.bin/make/unit-tests/opt-debug-lint.exp |   1 +
 usr.bin/make/unit-tests/opt-debug-lint.mk  |  14 +++++++++++++-
 2 files changed, 14 insertions(+), 1 deletions(-)

diffs (37 lines):

diff -r 530aa0a53f35 -r 2acd9d98c889 usr.bin/make/unit-tests/opt-debug-lint.exp
--- a/usr.bin/make/unit-tests/opt-debug-lint.exp        Mon Sep 14 21:23:58 2020 +0000
+++ b/usr.bin/make/unit-tests/opt-debug-lint.exp        Mon Sep 14 21:52:49 2020 +0000
@@ -1,5 +1,6 @@
 make: "opt-debug-lint.mk" line 19: Variable "X" is undefined
 make: "opt-debug-lint.mk" line 41: Variable "UNDEF" is undefined
+make: "opt-debug-lint.mk" line 58: Variable "UNDEF" is undefined
 make: Fatal errors encountered -- cannot continue
 make: stopped in unit-tests
 exit status 1
diff -r 530aa0a53f35 -r 2acd9d98c889 usr.bin/make/unit-tests/opt-debug-lint.mk
--- a/usr.bin/make/unit-tests/opt-debug-lint.mk Mon Sep 14 21:23:58 2020 +0000
+++ b/usr.bin/make/unit-tests/opt-debug-lint.mk Mon Sep 14 21:52:49 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: opt-debug-lint.mk,v 1.5 2020/09/14 21:23:58 rillig Exp $
+# $NetBSD: opt-debug-lint.mk,v 1.6 2020/09/14 21:52:49 rillig Exp $
 #
 # Tests for the -dL command line option, which runs additional checks
 # to catch common mistakes, such as unclosed variable expressions.
@@ -47,5 +47,17 @@
 # observable from the outside of the function Var_Parse.
 ${UNDEF}: ${UNDEF}
 
+# In a condition that has a defined(UNDEF) guard, all guarded conditions
+# may assume that the variable is defined since they will only be evaluated
+# if the variable is indeed defined.  Otherwise they are only parsed, and
+# for parsing it doesn't make a difference whether the variable is defined
+# or not.
+#
+# FIXME: As of 2020-09-14, the following line prints an error message saying
+# that UNDEF is undefined.
+.if defined(UNDEF) && exists(${UNDEF})
+.  error
+.endif
+
 all:
        @:;



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