Fix unsigned comparison check in const pad kernel

JakeStevens · web-flow · commit 444ffae1d753 · 2026-03-17T20:21:45.000Z
Differential Revision: D96926279 Pull Request resolved: pytorch#18233
diff --git a/kernels/portable/cpu/op_constant_pad_nd.cpp b/kernels/portable/cpu/op_constant_pad_nd.cpp
@@ -206,7 +206,7 @@ void constant_pad_nd_out_impl(
     out_strides[i] = getTrailingDims(out, static_cast<int64_t>(i));
 
     size_t pad_i = ndim - 1 - i;
-    if (pad_i >= 0 && pad_i < pad.size() / 2) {
+    if (pad_i < pad.size() / 2) {
       if (pad[2 * pad_i] + pad[2 * pad_i + 1] > 0) {
         last_padded_dim = i;
       }

Original file line number	Diff line number	Diff line change
`@@ -206,7 +206,7 @@ void constant_pad_nd_out_impl(`
`206`	`206`	`out_strides[i] = getTrailingDims(out, static_cast<int64_t>(i));`
`207`	`207`
`208`	`208`	`size_t pad_i = ndim - 1 - i;`
`209`		`- if (pad_i >= 0 && pad_i < pad.size() / 2) {`
	`209`	`+ if (pad_i < pad.size() / 2) {`
`210`	`210`	`if (pad[2 * pad_i] + pad[2 * pad_i + 1] > 0) {`
`211`	`211`	`last_padded_dim = i;`
`212`	`212`	`}`