1	#
2	# Some shell errors are unrecoverable! Like divide by zero (except in bash.
3	#
4	# Any others?
5
6
7	#### Unrecoverable: divide by zero in redirect word
8
9	$SH -c '
10	echo hi > file$(( 42 / 0 )) in
11	echo inside=$?
12	'
13	echo outside=$?
14
15	## STDOUT:
16	outside=1
17	## END
18
19	## OK dash/ash STDOUT:
20	outside=2
21	## END
22
23	# bash makes the command fail
24	## OK bash STDOUT:
25	inside=1
26	outside=0
27	## END:
28
29
30	#### Unrecoverable: divide by zero in conditional word
31
32	$SH -c '
33	if test foo$(( 42 / 0 )) = foo; then
34	echo true
35	else
36	echo false
37	fi
38	echo inside=$?
39	'
40	echo outside=$?
41
42	echo ---
43
44	$SH -c '
45	if test foo$(( 42 / 0 )) = foo; then
46	echo true
47	fi
48	echo inside=$?
49	'
50	echo outside=$?
51
52	## STDOUT:
53	outside=1
54	---
55	outside=1
56	## END
57
58	## OK dash/ash STDOUT:
59	outside=2
60	---
61	outside=2
62	## END
63
64	# bash makes the command fail
65	## OK bash STDOUT:
66	inside=1
67	outside=0
68	---
69	inside=1
70	outside=0
71	## END:
72
73	# weird difference in zsh!
74
75	## BUG zsh STDOUT:
76	outside=1
77	---
78	outside=0
79	## END
80
81
82	#### Unrecoverable: divide by zero in case
83
84	$SH -c '
85	case $(( 42 / 0 )) in
86	(*) echo hi ;;
87	esac
88	echo inside=$?
89	'
90	echo outside=$?
91
92	echo ---
93
94	$SH -c '
95	case foo in
96	( $(( 42 / 0 )) )
97	echo hi
98	;;
99	esac
100	echo inside=$?
101	'
102	echo outside=$?
103
104	## STDOUT:
105	outside=1
106	---
107	outside=1
108	## END
109
110	## OK dash/ash STDOUT:
111	outside=2
112	---
113	outside=2
114	## END
115
116	## OK bash STDOUT:
117	inside=1
118	outside=0
119	---
120	inside=1
121	outside=0
122	## END:
123
124	## BUG zsh STDOUT:
125	outside=0
126	---
127	outside=0
128	## END
129
130
131	#### Unrecoverable: ${undef?message}
132
133	$SH -c '
134	echo ${undef?message}
135	echo inside=$?
136	'
137	echo outside=$?
138
139	$SH -c '
140	case ${undef?message} in
141	(*) echo hi ;;
142	esac
143	echo inside=$?
144	'
145	echo outside=$?
146
147	## STDOUT:
148	outside=1
149	outside=1
150	## END
151	## OK dash STDOUT:
152	outside=2
153	outside=2
154	## END
155	## OK bash STDOUT:
156	outside=127
157	outside=127
158	## END
159
160	#### ${undef} with nounset
161
162	$SH -c '
163	set -o nounset
164	case ${undef} in
165	(*) echo hi ;;
166	esac
167	echo inside=$?
168	'
169	echo outside=$?
170
171	## STDOUT:
172	outside=1
173	## END
174
175	## OK dash STDOUT:
176	outside=2
177	## END
178
179	## OK bash STDOUT:
180	outside=127
181	## END
182
183	## BUG zsh STDOUT:
184	outside=0
185	## END
186