fix bug of infer shape in pool op. test=develop (#20213)

paddle/fluid/operators/pool_op.cc

@@ -93,7 +93,7 @@ void PoolOp::InferShape(framework::InferShapeContext* ctx) const {
   } else {
     for (size_t i = 0; i < data_dims.size(); ++i) {
       if ((!ctx->IsRuntime()) && (data_dims[i] < 0)) {
-        output_shape.push_back(in_x_dims[i]);
+        output_shape.push_back(data_dims[i]);
       } else {
         output_shape.push_back(
             PoolOutputSize(data_dims[i], ksize[i], paddings[2 * i],
@@ -118,8 +118,6 @@ void PoolOp::InferShape(framework::InferShapeContext* ctx) const {
 framework::OpKernelType PoolOp::GetExpectedKernelType(
     const framework::ExecutionContext& ctx) const {
   framework::LibraryType library_{framework::LibraryType::kPlain};
-  // std::string data_format = ctx.Attr<std::string>("data_format");  // change:
-  // delete
   std::string data_format = "AnyLayout";
   framework::DataLayout layout_ = framework::StringToDataLayout(data_format);
 
@@ -150,8 +148,6 @@ void PoolOpGrad::InferShape(framework::InferShapeContext* ctx) const {
 framework::OpKernelType PoolOpGrad::GetExpectedKernelType(
     const framework::ExecutionContext& ctx) const {
   framework::LibraryType library_{framework::LibraryType::kPlain};
-  // std::string data_format = ctx.Attr<std::string>("data_format");  //
-  // change:delete
   std::string data_format = "AnyLayout";
   framework::DataLayout layout_ = framework::StringToDataLayout(data_format);
 

python/paddle/fluid/tests/unittests/test_pool2d_op.py

@@ -968,6 +968,18 @@ class TestPool2dAPI(OpTest):
             append_batch_size=False,
             dtype="float32")
 
+        input_NHWC_negetive = fluid.layers.data(
+            name="input_NHWC_negetive",
+            shape=[2, -1, 5, 3],
+            append_batch_size=False,
+            dtype="float32")
+
+        input_NCHW_negetive = fluid.layers.data(
+            name="input_NCHW_negetive",
+            shape=[2, 3, -1, -1],
+            append_batch_size=False,
+            dtype="float32")
+
         ksize = [3, 3]
         out_1 = fluid.layers.pool2d(
             input=input_NHWC,
@@ -1034,11 +1046,34 @@ class TestPool2dAPI(OpTest):
             use_cudnn=False,
             data_format="NHWC")
 
+        # test negetive
+        out_9 = fluid.layers.pool2d(
+            input=input_NHWC_negetive,
+            pool_size=ksize,
+            pool_type="avg",
+            pool_padding=[0, 0],
+            use_cudnn=False,
+            data_format="NHWC")
+        assert out_9.shape == (2, -1, 3, 3)
+
+        out_10 = fluid.layers.pool2d(
+            input=input_NCHW_negetive,
+            pool_size=ksize,
+            pool_type="avg",
+            pool_padding=[0, 0],
+            use_cudnn=False,
+            data_format="NCHW")
+        assert out_10.shape == (2, 3, -1, -1)
+
         exe = fluid.Executor(place=fluid.CPUPlace())
         [res_1, res_2, res_3, res_4, res_5, res_6, res_7, res_8] = exe.run(
             fluid.default_main_program(),
-            feed={"input_NHWC": x_NHWC,
-                  "input_NCHW": x_NCHW},
+            feed={
+                "input_NHWC": x_NHWC,
+                "input_NCHW": x_NCHW,
+                "input_NHWC_negetive": x_NHWC,
+                "input_NCHW_negetive": x_NCHW
+            },
             fetch_list=[
                 out_1, out_2, out_3, out_4, out_5, out_6, out_7, out_8
             ])