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      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 
     27 PASS?=	1
     28 
     29 .if ${PASS} == 2
     30 all:
     31 # expect+1: warning: duplicate script for target "all" ignored
     32 	: pass 2
     33 .endif
     34 
     35 .if ${PASS} == 1
     36 
     37 PASS=	2
     38 .MAKEFLAGS: -f ${.PARSEDIR:q}/${.PARSEFILE:q}
     39 
     40 all:
     41 # expect+1: warning: using previous script for "all" defined here
     42 	: pass 1
     43 .endif
     44