1# $NetBSD: dep-colon-bug-cross-file.mk,v 1.5 2023/06/01 20:56:35 rillig Exp $ 2# 3# Until 2020-09-25, the very last dependency group of a top-level makefile 4# was not finished properly. This made it possible to add further commands 5# to that target. 6# 7# In pass 1, there is a dependency group at the bottom of the file. 8# This dependency group is not finished properly. Finishing the dependency 9# group would add the OP_HAS_COMMANDS flag to the "all" target, thereby 10# preventing any commands from being added later. 11# 12# After the file has been parsed completely, it is parsed again in pass 2. 13# In this pass, another command is added to the "current dependency group", 14# which was still the one from pass 1, which means it was possible to later 15# add commands to an existing target, even across file boundaries. 16# 17# Oops, even worse. Running this test in a make from 2020-09-25 or earlier 18# on NetBSD 8.0 x86_64 with MALLOC_OPTIONS=JA produces this or a similar 19# output: 20# 21# make: cannot open ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ. 22# 23# The 'Z' means access to already freed memory; see jemalloc(3). The cause 24# for this is that in MainParseArgs, the command line arguments were not 25# properly copied before storing them in global variables. 26 27PASS?= 1 28 29.if ${PASS} == 2 30all: 31# expect+1: warning: duplicate script for target "all" ignored 32 : pass 2 33.endif 34 35.if ${PASS} == 1 36 37PASS= 2 38.MAKEFLAGS: -f ${.PARSEDIR:q}/${.PARSEFILE:q} 39 40all: 41# expect+1: warning: using previous script for "all" defined here 42 : pass 1 43.endif 44