1# $NetBSD: varparse-dynamic.mk,v 1.7 2023/06/01 20:56:35 rillig Exp $ 2 3# Before 2020-07-27, there was an off-by-one error in Var_Parse that skipped 4# the last character in the variable name. 5# To trigger the bug, the variable had to be undefined. 6.if ${.TARGET} # exact match, may be undefined 7.endif 8# expect+1: Malformed conditional (${.TARGEX}) 9.if ${.TARGEX} # 1 character difference, must be defined 10.endif 11# expect+1: Malformed conditional (${.TARGXX}) 12.if ${.TARGXX} # 2 characters difference, must be defined 13.endif 14 15# When a dynamic variable (such as .TARGET) is evaluated in the global 16# scope, it is not yet ready to be expanded. Therefore the complete 17# expression is returned as the variable value, hoping that it can be 18# resolved at a later point. 19# 20# This test covers the code in Var_Parse that deals with DEF_UNDEF but not 21# DEF_DEFINED for dynamic variables. 22.if ${.TARGET:S,^,,} != "\${.TARGET:S,^,,}" 23. error 24.endif 25 26# If a dynamic variable is expanded in a non-local scope, the expression 27# based on this variable is not expanded. But there may be nested variable 28# expressions in the modifiers, and these are kept unexpanded as well. 29.if ${.TARGET:M${:Ufallback}} != "\${.TARGET:M\${:Ufallback}}" 30. error 31.endif 32.if ${.TARGET:M${UNDEF}} != "\${.TARGET:M\${UNDEF}}" 33. error 34.endif 35