From: Juergen Spitzmueller <spitz@lyx.org>
Date: Mon, 10 Feb 2014 08:24:14 +0000 (+0100)
Subject: Do not crash with empty (invalid) math environments (part of #8359)
X-Git-Tag: 2.1.0rc1~237
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=8b1504d7ade5c8b742bf9cdf7bde7fe0619cf678;p=features.git

Do not crash with empty (invalid) math environments (part of #8359)
---

diff --git a/src/mathed/MathParser.cpp b/src/mathed/MathParser.cpp
index 05ceed80f2..ef987789b3 100644
--- a/src/mathed/MathParser.cpp
+++ b/src/mathed/MathParser.cpp
@@ -1528,6 +1528,13 @@ bool Parser::parse1(InsetMathGrid & grid, unsigned flags,
 
 		else if (t.cs() == "begin") {
 			docstring const name = getArg('{', '}');
+			
+			if (name.empty()) {
+				success_ = false;
+				error("found invalid environment");
+				return success_;
+			}
+			
 			environments_.push_back(name);
 
 			if (name == "array" || name == "subarray") {