hush: fix segfault in ${?:N:M}

[oweals/busybox.git] / shell / hush_test / hush-vars / var_posix1.tests

diff --git a/shell/hush_test/hush-vars/var_posix1.tests b/shell/hush_test/hush-vars/var_posix1.tests
index 4139e2cc306943158bbfe0e832b75ce557e49167..82abe81984c579238a785c00addc4b4722e3bae6 100755 (executable)
--- a/shell/hush_test/hush-vars/var_posix1.tests
+++ b/shell/hush_test/hush-vars/var_posix1.tests
@@ -1,3 +1,25 @@
+unset var
+
+echo Empty:${var#}
+echo Empty:${var##}
+echo Empty:${var#*}
+echo Empty:${var##*}
+echo Empty:${var%}
+echo Empty:${var%%}
+echo Empty:${var%*}
+echo Empty:${var%%*}
+
+var=
+
+echo Empty:${var#}
+echo Empty:${var##}
+echo Empty:${var#*}
+echo Empty:${var##*}
+echo Empty:${var%}
+echo Empty:${var%%}
+echo Empty:${var%*}
+echo Empty:${var%%*}
+
 var=ababcdcd
 
 echo ${var#ab}
@@ -7,7 +29,9 @@ echo ${var##a*b}
 echo ${var#?}
 echo ${var##?}
 echo ${var#*}
-echo ${var##*}
+echo Empty:${var##*}
+echo ${var#}}_tail
+echo ${var#\}}_tail
 
 echo ${var%cd}
 echo ${var%%cd}
@@ -16,6 +40,13 @@ echo ${var%%c*d}
 echo ${var%?}
 echo ${var%%?}
 echo ${var%*}
-echo ${var%%*}
+echo Empty:${var%%*}
+echo ${var#}}_tail
+echo ${var#\}}_tail
+echo ${var%\\*}
+
+a=ab}; echo ${a%\}};
+a=abc; c=c; echo ${a%${c}}
+a=ab{{c; echo ${a%`echo {{c`}
 
-echo end
+echo End