From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 24 Jul 2017 21:15:53 +0000 (-0400)
Subject: Fix: negative loop bound check
X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=commitdiff_plain;h=0ca8409d46a794bafa1cbd50eb531fc650d148c1

Fix: negative loop bound check

Found by Coverity:

CID 1376197 (#1 of 1): Negative loop bound (NEGATIVE_RETURNS)
3. negative_returns: Using unsigned variable
bt_value_array_size(run_args) in a loop exit condition.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/cli/babeltrace-cfg-cli-args.c b/cli/babeltrace-cfg-cli-args.c
index 4fba2b16..2978ab48 100644
--- a/cli/babeltrace-cfg-cli-args.c
+++ b/cli/babeltrace-cfg-cli-args.c
@@ -2719,7 +2719,7 @@ struct bt_config *bt_config_run_from_args_array(struct bt_value *run_args,
 {
 	struct bt_config *cfg = NULL;
 	const char **argv;
-	size_t i;
+	int64_t i, len;
 	const size_t argc = bt_value_array_size(run_args) + 1;
 
 	argv = calloc(argc, sizeof(*argv));
@@ -2730,7 +2730,12 @@ struct bt_config *bt_config_run_from_args_array(struct bt_value *run_args,
 
 	argv[0] = "run";
 
-	for (i = 0; i < bt_value_array_size(run_args); i++) {
+	len = bt_value_array_size(run_args);
+	if (len < 0) {
+		printf_err("Invalid executable arguments\n");
+		goto end;
+	}
+	for (i = 0; i < len; i++) {
 		int ret;
 		struct bt_value *arg_value = bt_value_array_get(run_args, i);
 		const char *arg;