update

Author: phlrain

paddle/phi/kernels/gpu/concat_kernel.cu

@@ -45,6 +45,10 @@ void ConcatKernel(const Context& dev_ctx,
   out->Resize(out_dims);
   dev_ctx.template Alloc<T>(out);
 
+  if (out->numel() == 0) {
+    return;
+  }
+
   // If axis is 0, the lod of the output is not the same as inputs.
   if (axis == 0 && x[0]->lod().size() > 0) {
     size_t lod_size_0 = x[0]->lod().size();

python/paddle/tensor/manipulation.py

@@ -1409,8 +1409,6 @@ def concat(
     if in_dynamic_mode():
         if isinstance(axis, Variable):
             axis = axis.item(0)
-        if not isinstance(input, (Variable, paddle.pir.Value)):
-            input = [t for t in input if t.shape.count(0) == 0]
         return _C_ops.concat(input, axis)
     elif in_pir_mode():