commit b3cba2a09cf751d0cd5b1d0cfbe43d76caf6e1b1
Author: Enrico Forestieri <for...@lyx.org>
Date: Wed Jan 2 09:08:39 2019 +0100
Amend [2dcb7300/lyxgit]
Avoid a crash by checking that a cell is not empty before
accessing its content.
---
src/mathed/InsetMathMacro.cpp | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/mathed/InsetMathMacro.cpp b/src/mathed/InsetMathMacro.cpp
index f37b73b..d1bb67d 100644
--- a/src/mathed/InsetMathMacro.cpp
+++ b/src/mathed/InsetMathMacro.cpp
@@ -1113,10 +1113,10 @@ void InsetMathMacro::write(WriteStream & os) const
// delimiter-size-modifier macro (see #10497 and #11346)
bool braced = false;
size_type last = cell(i).size() - 1;
- if (cell(i)[last].nucleus()->asUnknownInset()) {
+ if (cell(i).size() &&
cell(i)[last].nucleus()->asUnknownInset()) {
latexkeys const * l =
in_word_set(cell(i)[last].nucleus()->name());
braced = (l && l->inset == "big");
- } else if (cell(i)[0].nucleus()->asScriptInset()) {
+ } else if (cell(i).size() &&
cell(i)[0].nucleus()->asScriptInset()) {
braced =
cell(i)[0].nucleus()->asScriptInset()->nuc().empty();
}
if (braced)
