Fix: validate that array expression contains constant

[lttng-tools.git] / src / common / filter / filter-visitor-generate-ir.c

diff --git a/src/common/filter/filter-visitor-generate-ir.c b/src/common/filter/filter-visitor-generate-ir.c
index 11c6b610c1276893ea4986dd18fc9a090f02fdc4..fb5d815d9958f3bdbf816db74cb52cacffb5f59d 100644 (file)
--- a/src/common/filter/filter-visitor-generate-ir.c
+++ b/src/common/filter/filter-visitor-generate-ir.c
@@ -14,12 +14,12 @@
 #include <string.h>
 #include <stdlib.h>
 #include <assert.h>
-#include <errno.h>
 #include <inttypes.h>
 #include "filter-ast.h"
 #include "filter-parser.h"
 #include "filter-ir.h"
 
+#include <common/compat/errno.h>
 #include <common/macros.h>
 #include <common/string-utils/string-utils.h>
 
@@ -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;