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authorjilles <jilles@FreeBSD.org>2011-04-15 15:26:05 +0000
committerjilles <jilles@FreeBSD.org>2011-04-15 15:26:05 +0000
commitd59eb063a480ce0e198b38158513c79ed5dc7f3b (patch)
treecb5de2aa98ea2050434434e54fc53e3a7b8e3fd5 /tools
parent6f6442dbe066e17a014ed28489de3f4817d2f98c (diff)
downloadFreeBSD-src-d59eb063a480ce0e198b38158513c79ed5dc7f3b.zip
FreeBSD-src-d59eb063a480ce0e198b38158513c79ed5dc7f3b.tar.gz
sh: Add test for obscure and ambiguous ${#?}.
Diffstat (limited to 'tools')
-rw-r--r--tools/regression/bin/sh/expansion/length4.011
1 files changed, 11 insertions, 0 deletions
diff --git a/tools/regression/bin/sh/expansion/length4.0 b/tools/regression/bin/sh/expansion/length4.0
new file mode 100644
index 0000000..5348be5
--- /dev/null
+++ b/tools/regression/bin/sh/expansion/length4.0
@@ -0,0 +1,11 @@
+# $FreeBSD$
+
+# The construct ${#?} is ambiguous in POSIX.1-2008: it could be the length
+# of $? or it could be $# giving an error in the (impossible) case that it
+# is not set.
+# We use the former interpretation; it seems more useful.
+
+:
+[ "${#?}" = 1 ] || echo '${#?} wrong'
+(exit 42)
+[ "${#?}" = 2 ] || echo '${#?} wrong'
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