1# $NetBSD: opt-file.mk,v 1.12 2021/04/04 10:13:09 rillig Exp $ 2# 3# Tests for the -f command line option. 4 5# TODO: Implementation 6 7all: .PHONY 8all: file-ending-in-backslash 9all: file-ending-in-backslash-mmap 10all: line-with-trailing-whitespace 11all: file-containing-null-byte 12 13# Passing '-' as the filename reads from stdin. This is unusual but possible. 14# 15# In the unlikely case where a file ends in a backslash instead of a newline, 16# that backslash is trimmed. See ParseGetLine. 17# 18# make-2014.01.01.00.00.00 invoked undefined behavior, reading text from 19# outside of the file buffer. 20# 21# printf '%s' 'VAR=value\' \ 22# | MALLOC_OPTIONS=JA make-2014.01.01.00.00.00 -r -f - -V VAR -dA 2>&1 \ 23# | less 24# 25# The debug output shows how make happily uses freshly allocated memory (the 26# <A5>) and already freed memory ('Z'). 27# 28# ParseReadLine (1): 'VAR=value\<A5><A5><A5><A5><A5><A5>' 29# Global:VAR = value\<A5><A5><A5><A5><A5><A5>value\<A5><A5><A5><A5><A5><A5> 30# ParseReadLine (2): 'alue\<A5><A5><A5><A5><A5><A5>' 31# ParseDependency(alue\<A5><A5><A5><A5><A5><A5>) 32# make-2014.01.01.00.00.00: "(stdin)" line 2: Need an operator 33# ParseReadLine (3): '<A5><A5><A5>ZZZZZZZZZZZZZZZZ' 34# ParseDependency(<A5><A5><A5>ZZZZZZZZZZZZZZZZ) 35# 36file-ending-in-backslash: .PHONY 37 @printf '%s' 'VAR=value\' \ 38 | ${MAKE} -r -f - -V VAR 39 40# Between parse.c 1.170 from 2010-12-25 and parse.c 1.511 from 2020-12-22, 41# there was an out-of-bounds write in ParseGetLine, where line_end pointed at 42# the end of the allocated buffer, in the special case where loadedfile_mmap 43# had not added the final newline character. 44file-ending-in-backslash-mmap: .PHONY 45 @printf '%s' 'VAR=value\' > opt-file-backslash 46 @${MAKE} -r -f opt-file-backslash -V VAR 47 @rm opt-file-backslash 48 49# Since parse.c 1.511 from 2020-12-22, an assertion in ParseGetLine failed 50# for lines that contained trailing whitespace. Worked around in parse.c 51# 1.513, properly fixed in parse.c 1.514. 52line-with-trailing-whitespace: .PHONY 53 @printf '%s' 'VAR=$@ ' > opt-file-trailing-whitespace 54 @${MAKE} -r -f opt-file-trailing-whitespace -V VAR 55 @rm opt-file-trailing-whitespace 56 57# If a makefile contains null bytes, it is an error. Throughout the history 58# of make, the behavior has changed several times, sometimes intentionally, 59# sometimes by accident. 60# 61# echo 'VAR=value' | tr 'l' '\0' > zero-byte.in 62# printf '%s\n' 'all:' ': VAR=${VAR:Q}' >> zero-byte.in 63# 64# for year in $(seq 2003 2020); do 65# echo $year: 66# make-$year.01.01.00.00.00 -r -f zero-byte.in 67# echo "exit status $?" 68# echo 69# done 2>&1 \ 70# | sed "s,$PWD/,.," 71# 72# This program generated the following output: 73# 74# 2003 to 2007: 75# exit status 0 76# 77# 2008 to 2010: 78# make: "zero-byte.in" line 1: Zero byte read from file 79# make: Fatal errors encountered -- cannot continue 80# 81# make: stopped in . 82# exit status 1 83# 84# 2011 to 2013: 85# make: no target to make. 86# 87# make: stopped in . 88# exit status 2 89# 90# 2014 to 2020-12-06: 91# make: "zero-byte.in" line 1: warning: Zero byte read from file, skipping rest of line. 92# exit status 0 93# 94# Since 2020-12-07: 95# make: "zero-byte.in" line 1: Zero byte read from file 96# make: Fatal errors encountered -- cannot continue 97# make: stopped in . 98# exit status 1 99file-containing-null-byte: .PHONY 100 @printf '%s\n' 'VAR=value' 'VAR2=VALUE2' \ 101 | tr 'l' '\0' \ 102 | ${MAKE} -r -f - -V VAR -V VAR2 103 104all: 105 : Making ${.TARGET} 106