From b679b0a3e8ac54570e285281da43e7fa2c861ebd Mon Sep 17 00:00:00 2001
From: Cyrille Bagard <nocbos@gmail.com>
Date: Sun, 22 Oct 2023 21:23:03 +0200
Subject: Fortify the parsing of hexadecimal definitions.
---
src/analysis/scan/grammar.y | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/analysis/scan/grammar.y b/src/analysis/scan/grammar.y
index f603c85..02e5973 100644
--- a/src/analysis/scan/grammar.y
+++ b/src/analysis/scan/grammar.y
@@ -788,6 +788,7 @@ YY_DECL;
}
| "~" hex_token
{
+ if ($2 == NULL) YYERROR;
$$ = g_scan_token_node_not_new($2);
}
@@ -845,6 +846,9 @@ YY_DECL;
hex_choices : hex_token "|" hex_token
{
+ if ($1 == NULL) YYERROR;
+ if ($3 == NULL) YYERROR;
+
$$ = g_scan_token_node_choice_new();
g_scan_token_node_choice_add(G_SCAN_TOKEN_NODE_CHOICE($$), $1);
g_object_unref(G_OBJECT($1));
@@ -853,6 +857,8 @@ YY_DECL;
}
| hex_choices "|" hex_token
{
+ if ($3 == NULL) YYERROR;
+
$$ = $1;
g_scan_token_node_choice_add(G_SCAN_TOKEN_NODE_CHOICE($$), $3);
g_object_unref(G_OBJECT($3));
--
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