Patch by Johan to fix crashing by undefined path parameters in 4 LPEs

[inkscape.git] / src / live_effects / lpe-envelope.cpp

diff --git a/src/live_effects/lpe-envelope.cpp b/src/live_effects/lpe-envelope.cpp
index a730f14ff2c8f9f0f25aa9f82a7da7a028465781..abd975b4ebe61023f2cfcb13d6fe192996b61b8a 100755 (executable)
--- a/src/live_effects/lpe-envelope.cpp
+++ b/src/live_effects/lpe-envelope.cpp
@@ -69,6 +69,15 @@ LPEEnvelope::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd
 
     using namespace Geom;
 
+    // Don't allow empty path parameters:
+    if ( bend_path1.get_pathvector().empty()
+         || bend_path2.get_pathvector().empty()
+         || bend_path3.get_pathvector().empty()
+         || bend_path4.get_pathvector().empty() )
+    {
+        return pwd2_in;
+    }
+
     /*
     The code below is inspired from the Bend Path code developed by jfb and mgsloan
     Please, read it before tring to understand this one