From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 25 May 2020 20:15:40 +0000 (-0400)
Subject: Fix: validate that array expression contains constant
X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=commitdiff_plain;h=356bfe7b6e03d3b61b44514674e60d1b3036693e

Fix: validate that array expression contains constant

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ic4f9b178d918b2c7c9dd27bc6a30c1798a171727
---

diff --git a/src/lib/lttng-ctl/filter/filter-visitor-generate-ir.c b/src/lib/lttng-ctl/filter/filter-visitor-generate-ir.c
index 11c6b610c..1ea6fe38f 100644
--- a/src/lib/lttng-ctl/filter/filter-visitor-generate-ir.c
+++ b/src/lib/lttng-ctl/filter/filter-visitor-generate-ir.c
@@ -244,6 +244,11 @@ struct ir_load_expression *create_load_expression(struct filter_node *node)
 				bracket_node != NULL;
 				bracket_node = bracket_node->u.expression.next_bracket) {
 			prev_op = load_exp_op;
+			if (bracket_node->type != NODE_EXPRESSION ||
+				bracket_node->u.expression.type != AST_EXP_CONSTANT) {
+					fprintf(stderr, "[error] Expecting constant index in array expression\n");
+					goto error;
+				}
 			load_exp_op = calloc(sizeof(struct ir_load_expression_op), 1);
 			if (!load_exp_op)
 				goto error;