* src/frontend/controllers/frontend_helpers.cpp: safety fix suggested by Andre

[lyx.git] / src / frontends / controllers / frontend_helpers.cpp

diff --git a/src/frontends/controllers/frontend_helpers.cpp b/src/frontends/controllers/frontend_helpers.cpp
index 3e1918b3c2aa370d8578960a944b1ad481bdbccd..87e2936f640d27680940a95cdc72eb6b5188f49a 100644 (file)
--- a/src/frontends/controllers/frontend_helpers.cpp
+++ b/src/frontends/controllers/frontend_helpers.cpp
@@ -191,7 +191,7 @@ docstring const familyName(docstring const & name)
        if (idx != docstring::npos)
                return ltrim(fname.substr(0, idx));
        idx = fname.rfind('.');
-       if (idx != docstring::npos)
+       if (idx != docstring::npos && idx + 1 < fname.size())
                fname = ltrim(fname.substr(idx + 1));
        // test if we have a LaTeX Space in front
        if (fname[0] == '\\')