From d208258f51ac8c3b355cd31a874dcf93099b3e98 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Mon, 6 Dec 2010 12:52:19 +1030
Subject: [PATCH] idtree: add unit test for ids around INT_MAX

This causes a SEGV on my laptop.
---
 ccan/idtree/test/run-wrap.c | 22 ++++++++++++++++++++++
 ccan/idtree/test/run.c      |  2 +-
 2 files changed, 23 insertions(+), 1 deletion(-)
 create mode 100644 ccan/idtree/test/run-wrap.c

diff --git a/ccan/idtree/test/run-wrap.c b/ccan/idtree/test/run-wrap.c
new file mode 100644
index 00000000..6a62323d
--- /dev/null
+++ b/ccan/idtree/test/run-wrap.c
@@ -0,0 +1,22 @@
+#include <ccan/idtree/idtree.c>
+#include <ccan/tap/tap.h>
+#include <limits.h>
+
+int main(int argc, char *argv[])
+{
+	unsigned int i;
+	struct idtree *idtree;
+
+	plan_tests(6);
+	idtree = idtree_new(NULL);
+
+	ok1(idtree_add_above(idtree, &i, INT_MAX-1, INT_MAX) == INT_MAX-1);
+	ok1(idtree_add_above(idtree, &i, INT_MAX-1, INT_MAX) == INT_MAX);
+	ok1(idtree_add_above(idtree, &i, INT_MAX-1, INT_MAX) == -1);
+
+	ok1(idtree_remove(idtree, INT_MAX-1) == true);
+	ok1(idtree_add_above(idtree, &i, INT_MAX-1, INT_MAX) == INT_MAX-1);
+	ok1(idtree_add_above(idtree, &i, INT_MAX-1, INT_MAX) == -1);
+	talloc_free(idtree);
+	exit(exit_status());
+}
diff --git a/ccan/idtree/test/run.c b/ccan/idtree/test/run.c
index bd12f4c3..99ea2daa 100644
--- a/ccan/idtree/test/run.c
+++ b/ccan/idtree/test/run.c
@@ -2,7 +2,7 @@
 #include <ccan/tap/tap.h>
 #include <limits.h>
 
-#define ALLOC_MAX 32
+#define ALLOC_MAX (2 * IDTREE_SIZE)
 
 int main(int argc, char *argv[])
 {
-- 
2.39.2