Module Name: src
Committed By: rillig
Date: Sun Mar 14 17:14:16 UTC 2021
Modified Files:
src/usr.bin/make/unit-tests: varmod-remember.mk
Log Message:
tests/make: demonstrate unintended edge case for the ':_' modifier
To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 src/usr.bin/make/unit-tests/varmod-remember.mk
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/usr.bin/make/unit-tests/varmod-remember.mk
diff -u src/usr.bin/make/unit-tests/varmod-remember.mk:1.4 src/usr.bin/make/unit-tests/varmod-remember.mk:1.5
--- src/usr.bin/make/unit-tests/varmod-remember.mk:1.4 Sun Mar 14 17:07:11 2021
+++ src/usr.bin/make/unit-tests/varmod-remember.mk Sun Mar 14 17:14:15 2021
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-remember.mk,v 1.4 2021/03/14 17:07:11 rillig Exp $
+# $NetBSD: varmod-remember.mk,v 1.5 2021/03/14 17:14:15 rillig Exp $
#
# Tests for the :_ modifier, which saves the current variable value
# in the _ variable or another, to be used later again.
@@ -17,4 +17,16 @@
. error
.endif
+# The ':_' modifier takes a variable name as optional argument. This variable
+# name can refer to other variables, though this was rather an implementation
+# oversight than an intended feature. The variable name stops at the first
+# '}' or ')' and thus cannot use the usual form ${VARNAME} of long variable
+# names.
+S= INDIRECT_VARNAME
+.if ${value:L:@var@${var:_=$S}@} != "value"
+. error
+.elif ${INDIRECT_VARNAME} != "value"
+. error
+.endif
+
all:
