commit 8b1504d7ade5c8b742bf9cdf7bde7fe0619cf678
Author: Juergen Spitzmueller <[email protected]>
Date: Mon Feb 10 09:24:14 2014 +0100
Do not crash with empty (invalid) math environments (part of #8359)
diff --git a/src/mathed/MathParser.cpp b/src/mathed/MathParser.cpp
index 05ceed8..ef98778 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") {
