1# $NetBSD: opt-file.mk,v 1.15 2022/03/26 13:32:31 rillig Exp $ 2# 3# Tests for the -f command line option, which adds a makefile to the list of 4# files that are parsed. 5 6# TODO: Implementation 7 8all: .PHONY 9all: file-ending-in-backslash 10all: file-ending-in-backslash-mmap 11all: line-with-trailing-whitespace 12all: file-containing-null-byte 13 14# When the filename is '-', the input comes from stdin. This is unusual but 15# possible. 16# 17# In the unlikely case where a file ends in a backslash instead of a newline, 18# that backslash is trimmed. See ReadLowLevelLine. 19# 20# make-2014.01.01.00.00.00 invoked undefined behavior, reading text from 21# outside of the file buffer. 22# 23# printf '%s' 'VAR=value\' \ 24# | MALLOC_OPTIONS="JA" \ 25# MALLOC_CONF="junk:true" \ 26# make-2014.01.01.00.00.00 -r -f - -V VAR -dA 2>&1 \ 27# | less 28# 29# The debug output shows how make happily uses freshly allocated memory (the 30# <A5>) and already freed memory ('Z'). 31# 32# ParseReadLine (1): 'VAR=value\<A5><A5><A5><A5><A5><A5>' 33# Global:VAR = value\<A5><A5><A5><A5><A5><A5>value\<A5><A5><A5><A5><A5><A5> 34# ParseReadLine (2): 'alue\<A5><A5><A5><A5><A5><A5>' 35# ParseDependency(alue\<A5><A5><A5><A5><A5><A5>) 36# make-2014.01.01.00.00.00: "(stdin)" line 2: Need an operator 37# ParseReadLine (3): '<A5><A5><A5>ZZZZZZZZZZZZZZZZ' 38# ParseDependency(<A5><A5><A5>ZZZZZZZZZZZZZZZZ) 39# 40file-ending-in-backslash: .PHONY 41 @printf '%s' 'VAR=value\' \ 42 | ${MAKE} -r -f - -V VAR 43 44# Between parse.c 1.170 from 2010-12-25 and parse.c 1.511 from 2020-12-22, 45# there was an out-of-bounds write in ParseGetLine, where line_end pointed at 46# the end of the allocated buffer, in the special case where loadedfile_mmap 47# had not added the final newline character. 48file-ending-in-backslash-mmap: .PHONY 49 @printf '%s' 'VAR=value\' > opt-file-backslash 50 @${MAKE} -r -f opt-file-backslash -V VAR 51 @rm opt-file-backslash 52 53# Since parse.c 1.511 from 2020-12-22, an assertion in ParseGetLine failed 54# for lines that contained trailing whitespace. Worked around in parse.c 55# 1.513, properly fixed in parse.c 1.514 from 2020-12-22. 56line-with-trailing-whitespace: .PHONY 57 @printf '%s' 'VAR=$@ ' > opt-file-trailing-whitespace 58 @${MAKE} -r -f opt-file-trailing-whitespace -V VAR 59 @rm opt-file-trailing-whitespace 60 61# If a makefile contains null bytes, it is an error. Throughout the history 62# of make, the behavior has changed several times, sometimes intentionally, 63# sometimes by accident. 64# 65# echo 'VAR=value' | tr 'l' '\0' > zero-byte.in 66# printf '%s\n' 'all:' ': VAR=${VAR:Q}' >> zero-byte.in 67# 68# for year in $(seq 2003 2020); do 69# echo $year: 70# make-$year.01.01.00.00.00 -r -f zero-byte.in 71# echo "exit status $?" 72# echo 73# done 2>&1 \ 74# | sed "s,$PWD/,.," 75# 76# This program generated the following output: 77# 78# 2003 to 2007: 79# exit status 0 80# 81# 2008 to 2010: 82# make: "zero-byte.in" line 1: Zero byte read from file 83# make: Fatal errors encountered -- cannot continue 84# 85# make: stopped in . 86# exit status 1 87# 88# 2011 to 2013: 89# make: no target to make. 90# 91# make: stopped in . 92# exit status 2 93# 94# 2014 to 2020-12-06: 95# make: "zero-byte.in" line 1: warning: Zero byte read from file, skipping rest of line. 96# exit status 0 97# 98# Since 2020-12-07: 99# make: "zero-byte.in" line 1: Zero byte read from file 100# make: Fatal errors encountered -- cannot continue 101# make: stopped in . 102# exit status 1 103file-containing-null-byte: .PHONY 104 @printf '%s\n' 'VAR=value' 'VAR2=VALUE2' \ 105 | tr 'l' '\0' \ 106 | ${MAKE} -r -f - -V VAR -V VAR2 107 108all: 109 : Making ${.TARGET} 110