Mirror: avoir crash

this fixes NatronGitHub/Natron#660
NatronGitHub · Sep 29, 2021 · 0d69b7c · 0d69b7c
1 parent 9d32c9b
commit 0d69b7c
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/Mirror/Mirror.cpp b/Mirror/Mirror.cpp
@@ -98,14 +98,19 @@ class PixelMirrorer
 
             PIX *dstPix = (PIX *) getDstPixelAddress(procWindow.x1, dsty);
             assert(dstPix);
+            if (!dstPix) {
+                continue;
+            }
 
             int srcy = flip ? (_yoff - dsty) : dsty;
 
             assert( !( (srcy < _srcBounds.y1) || (_srcBounds.y2 <= srcy) || (_srcBounds.y2 <= _srcBounds.y1) ) );
 
             const PIX *srcPix = (const PIX *) getSrcPixelAddress(srcx1, srcy);
             assert(srcPix);
-            if (flop) {
+            if (!srcPix) {
+                std::memset( dstPix, 0, sizeof(PIX) * nComponents * (procWindow.x2 - procWindow.x1) );
+            } else if (flop) {
                 for (int x = procWindow.x1; x < procWindow.x2; ++x, dstPix += nComponents, srcPix -= nComponents) {
                     std::copy(srcPix, srcPix + nComponents, dstPix);
                 }