opencv: Fix memcpy within C++
Explicitly cast to void* because GCC 8 is (rightfully) upset that this is
"writing to an object of type ‘...’ with no trivial copy-assignment".
Caused by the new "class-memaccess" warning
diff --git a/ext/opencv/gstgrabcut.cpp b/ext/opencv/gstgrabcut.cpp
index 4cbc706..2e3aa60 100644
--- a/ext/opencv/gstgrabcut.cpp
+++ b/ext/opencv/gstgrabcut.cpp
@@ -315,7 +315,7 @@
gc->facepos.width = meta->w * gc->scale * 0.9;
gc->facepos.height = meta->h * gc->scale * 1.1;
} else {
- memset (&(gc->facepos), 0, sizeof (gc->facepos));
+ memset (static_cast<void*>(&(gc->facepos)), 0, sizeof (gc->facepos));
}
/* normally input should be RGBA */
