X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FConverter.cpp;h=ee17f57445e1b61bed6f33ee0e4c308d003e65dd;hb=0430132aa049f2a97280bcbcff69f71d42ed7d98;hp=f10d563fc2d52ae496c4d2a0a777530d439ebdac;hpb=306b136cc005a1aeb9a6861ee0ac6fe2a2dd53e3;p=lyx.git

diff --git a/src/Converter.cpp b/src/Converter.cpp
index f10d563fc2..ee17f57445 100644
--- a/src/Converter.cpp
+++ b/src/Converter.cpp
@@ -29,6 +29,7 @@
 #include "support/FileNameList.h"
 #include "support/filetools.h"
 #include "support/gettext.h"
+#include "support/lassert.h"
 #include "support/lstrings.h"
 #include "support/os.h"
 #include "support/Package.h"
@@ -707,6 +708,8 @@ void Converters::buildGraph()
 	for (; it != end ; ++it) {
 		int const from = formats.getNumber(it->from());
 		int const to   = formats.getNumber(it->to());
+		LASSERT(from >= 0, continue);
+		LASSERT(to >= 0, continue);
 		G_.addEdge(from, to);
 	}
 }