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sh: Add tests for NUL byte in command substitution output.

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This commit is contained in:
Jilles Tjoelker 2017-04-23 21:58:17 +00:00
parent 8d0f9a9364
commit 53f6052862
2 changed files with 25 additions and 0 deletions
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1
bin/sh/tests/expansion/Makefile
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@ -45,6 +45,7 @@ ${PACKAGE}FILES+= cmdsubst20.0
${PACKAGE}FILES+= cmdsubst21.0
${PACKAGE}FILES+= cmdsubst22.0
${PACKAGE}FILES+= cmdsubst23.0
${PACKAGE}FILES+= cmdsubst24.0
${PACKAGE}FILES+= export1.0
${PACKAGE}FILES+= export2.0
${PACKAGE}FILES+= export3.0

24
bin/sh/tests/expansion/cmdsubst24.0 Normal file
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@ -0,0 +1,24 @@
# $FreeBSD$
# POSIX leaves the effect of NUL bytes in command substitution output
# unspecified but we have always discarded them.
failures=0
check() {
if [ "$2" != "$3" ]; then
printf "Failed at line %s: got \"%s\" expected \"%s\"\n" "$1" "$2" "$3"
: $((failures += 1))
fi
}
fmt='\0a\0 \0b\0c d\0'
assign_builtin=$(printf "$fmt")
check "$LINENO" "$assign_builtin" "a bc d"
assign_pipeline=$(printf "$fmt" | cat)
check "$LINENO" "$assign_pipeline" "a bc d"
set -- $(printf "$fmt") $(printf "$fmt" | cat) "$(printf "$fmt")" "$(printf "$fmt" | cat)"
IFS=@
splits="$*"
check "$LINENO" "$splits" "a@bc@d@a@bc@d@a bc d@a bc d"
[ "$failures" = 0 ]