From: Jürg Billeter <j@bitron.ch>
Date: Sun, 24 Oct 2010 11:24:01 +0000 (+0200)
Subject: Genie: Fix out of bounds access in scanner
X-Git-Tag: 0.10.1~6
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c9880c8bce66547e14997dc7650093e5f53d267;p=thirdparty%2Fvala.git

Genie: Fix out of bounds access in scanner
---

diff --git a/vala/valageniescanner.vala b/vala/valageniescanner.vala
index a590dad8e..e1f945a28 100644
--- a/vala/valageniescanner.vala
+++ b/vala/valageniescanner.vala
@@ -996,7 +996,9 @@ public class Vala.Genie.Scanner {
 			case '}':
 				type = TokenType.CLOSE_BRACE;
 				open_brace_count--;
-				state_stack.length--;
+				if (state_stack.length > 0) {
+					state_stack.length--;
+				}
 				current++;
 				break;
 			case '(':
@@ -1009,7 +1011,9 @@ public class Vala.Genie.Scanner {
 				type = TokenType.CLOSE_PARENS;
 				open_parens_count--;
 				current++;
-				state_stack.length--;
+				if (state_stack.length > 0) {
+					state_stack.length--;
+				}
 				if (in_template ()) {
 					type = TokenType.COMMA;
 				}
@@ -1021,7 +1025,9 @@ public class Vala.Genie.Scanner {
 				break;
 			case ']':
 				type = TokenType.CLOSE_BRACKET;
-				state_stack.length--;
+				if (state_stack.length > 0) {
+					state_stack.length--;
+				}
 				current++;
 				break;
 			case '.':