fix save and load ops on windows test=develop

paddle/fluid/operators/load_combine_op.cc

@@ -38,13 +38,13 @@ class LoadCombineOp : public framework::OperatorBase {
         static_cast<int>(out_var_names.size()), 0,
         "The number of output variables should be greater than 0.");
     if (!model_from_memory) {
-      std::ifstream fin(filename);
+      std::ifstream fin(filename, std::ios::binary);
       PADDLE_ENFORCE(static_cast<bool>(fin),
                      "Cannot open file %s for load_combine op", filename);
       LoadParamsFromBuffer(scope, place, &fin, load_as_fp16, out_var_names);
     } else {
       PADDLE_ENFORCE(!filename.empty(), "Cannot load file from memory");
-      std::stringstream fin(filename);
+      std::stringstream fin(filename, std::ios::binary);
       LoadParamsFromBuffer(scope, place, &fin, load_as_fp16, out_var_names);
     }
   }

paddle/fluid/operators/load_op.cc

@@ -34,7 +34,7 @@ class LoadOp : public framework::OperatorBase {
     // FIXME(yuyang18): We save variable to local file now, but we should change
     // it to save an output stream.
     auto filename = Attr<std::string>("file_path");
-    std::ifstream fin(filename);
+    std::ifstream fin(filename, std::ios::binary);
     PADDLE_ENFORCE(static_cast<bool>(fin), "Cannot open file %s for load op",
                    filename);
 

paddle/fluid/operators/save_combine_op.cc

@@ -49,7 +49,7 @@ class SaveCombineOp : public framework::OperatorBase {
     }
 
     MkDirRecursively(DirName(filename).c_str());
-    std::ofstream fout(filename);
+    std::ofstream fout(filename, std::ios::binary);
     PADDLE_ENFORCE(static_cast<bool>(fout), "Cannot open %s to write",
                    filename);
 

paddle/fluid/operators/save_op.cc

@@ -80,7 +80,7 @@ class SaveOp : public framework::OperatorBase {
 
     // FIXME(yuyang18): We save variable to local file now, but we should change
     // it to save an output stream.
-    std::ofstream fout(filename);
+    std::ofstream fout(filename, std::ios::binary);
     PADDLE_ENFORCE(static_cast<bool>(fout), "Cannot open %s to write",
                    filename);
 
@@ -122,7 +122,7 @@ class SaveOp : public framework::OperatorBase {
 
     // FIXME(yuyang18): We save variable to local file now, but we should change
     // it to save an output stream.
-    std::ofstream fout(filename);
+    std::ofstream fout(filename, std::ios::binary);
     PADDLE_ENFORCE(static_cast<bool>(fout), "Cannot open %s to write",
                    filename);
     framework::SerializeToStream(fout, selectedRows, dev_ctx);