Try to solve issue 10166

LaurentBerger · LaurentBerger · commit 606a5fd537ac · 2017-11-27T13:13:05.000+01:00
diff --git a/modules/core/include/opencv2/core.hpp b/modules/core/include/opencv2/core.hpp
@@ -3134,6 +3134,7 @@ class CV_EXPORTS_W Algorithm
     template<typename _Tp> static Ptr<_Tp> load(const String& filename, const String& objname=String())
     {
         FileStorage fs(filename, FileStorage::READ);
+        CV_Assert(fs.isOpened());
         FileNode fn = objname.empty() ? fs.getFirstTopLevelNode() : fs[objname];
         if (fn.empty()) return Ptr<_Tp>();
         Ptr<_Tp> obj = _Tp::create();
diff --git a/modules/ml/src/ann_mlp.cpp b/modules/ml/src/ann_mlp.cpp
@@ -1329,7 +1329,7 @@ Ptr<ANN_MLP> ANN_MLP::load(const String& filepath)
 {
     FileStorage fs;
     fs.open(filepath, FileStorage::READ);
-
+    CV_Assert(fs.isOpened());
     Ptr<ANN_MLP> ann = makePtr<ANN_MLPImpl>();
 
     ((ANN_MLPImpl*)ann.get())->read(fs.getFirstTopLevelNode());

Original file line number	Diff line number	Diff line change
`@@ -3134,6 +3134,7 @@ class CV_EXPORTS_W Algorithm`
`3134`	`3134`	`template<typename _Tp> static Ptr<_Tp> load(const String& filename, const String& objname=String())`
`3135`	`3135`	`{`
`3136`	`3136`	`FileStorage fs(filename, FileStorage::READ);`
	`3137`	`+ CV_Assert(fs.isOpened());`
`3137`	`3138`	`FileNode fn = objname.empty() ? fs.getFirstTopLevelNode() : fs[objname];`
`3138`	`3139`	`if (fn.empty()) return Ptr<_Tp>();`
`3139`	`3140`	`Ptr<_Tp> obj = _Tp::create();`
Original file line number	Diff line number	Diff line change
`@@ -1329,7 +1329,7 @@ Ptr<ANN_MLP> ANN_MLP::load(const String& filepath)`
`1329`	`1329`	`{`
`1330`	`1330`	`FileStorage fs;`
`1331`	`1331`	`fs.open(filepath, FileStorage::READ);`
`1332`		`-`
	`1332`	`+ CV_Assert(fs.isOpened());`
`1333`	`1333`	`Ptr<ANN_MLP> ann = makePtr<ANN_MLPImpl>();`
`1334`	`1334`
`1335`	`1335`	`((ANN_MLPImpl*)ann.get())->read(fs.getFirstTopLevelNode());`