Fix parallel resizing and listing of the same set

When elements added to a hash:* type of set and resizing triggered,
parallel listing could start to list the original set (before resizing)
and "continue" with listing the new set. Fix it by references and
using the original hash table for listing. Therefore the destroying
the original hash table may happen from the resizing or listing functions.

2 files changed, 15 insertions, 0 deletions

diff --git a/tests/hash:ip.t b/tests/hash:ip.t
index 2ad6831..a3ab1e2 100644
--- a/tests/hash:ip.t
+++ b/tests/hash:ip.t
@@ -58,6 +58,10 @@
 0 ipset -W test resize-test
 # IP: Check listing, which requires multiple messages
 0 n=`ipset -S test | wc -l` && test $n -eq 8161
+# IP: Flush sets
+0 ipset -F
+# IP: Run resize and listing parallel
+0 ./resize-and-list.sh
 # IP: Destroy sets
 0 ipset -X
 # IP: Create set to add a range
diff --git a/tests/resize-and-list.sh b/tests/resize-and-list.sh
new file mode 100755
index 0000000..209408a
--- /dev/null
+++ b/tests/resize-and-list.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+./resize.sh &
+n=0
+while [ $n -ne 8161 ]; do
+    echo $n
+    n=`ipset -S resize-test | wc -l`
+done
+ipset x
+
+    
\ No newline at end of file