diff options
Diffstat (limited to 'unit-tests/cond-cmp-string.mk')
| -rw-r--r-- | unit-tests/cond-cmp-string.mk | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/unit-tests/cond-cmp-string.mk b/unit-tests/cond-cmp-string.mk index 6af457925e97..6b5cba83bef7 100644 --- a/unit-tests/cond-cmp-string.mk +++ b/unit-tests/cond-cmp-string.mk @@ -1,4 +1,4 @@ -# $NetBSD: cond-cmp-string.mk,v 1.11 2020/10/30 14:53:31 rillig Exp $ +# $NetBSD: cond-cmp-string.mk,v 1.13 2020/11/15 14:07:53 rillig Exp $ # # Tests for string comparisons in .if conditions. @@ -19,9 +19,14 @@ . error .endif -# The left-hand side of the comparison requires a defined variable. -# The variable named "" is not defined, but applying the :U modifier to it -# makes it "kind of defined" (see VAR_KEEP). Therefore it is ok here. +# The left-hand side of the comparison requires that any variable expression +# is defined. +# +# The variable named "" is never defined, nevertheless it can be used as a +# starting point for variable expressions. Applying the :U modifier to such +# an undefined expression turns it into a defined expression. +# +# See ApplyModifier_Defined and VEF_DEF. .if ${:Ustr} != "str" . error .endif @@ -33,9 +38,11 @@ .endif # It is not possible to concatenate two string literals to form a single -# string. +# string. In C, Python and the shell this is possible, but not in make. .if "string" != "str""ing" . error +.else +. error .endif # There is no = operator for strings. @@ -88,3 +95,16 @@ .if ${:U word } != " ${:Uword} " . error .endif + +# If at least one side of the comparison is a string literal, the string +# comparison is performed. +.if 12345 != "12345" +. error +.endif + +# If at least one side of the comparison is a string literal, the string +# comparison is performed. The ".0" in the left-hand side makes the two +# sides of the equation unequal. +.if 12345.0 == "12345" +. error +.endif |