From a846bb0aa523c8781248161b63bc2ab6a245cec1 Mon Sep 17 00:00:00 2001
From: Julien Cretel <jub0bsinthecloud@gmail.com>
Date: Mon, 29 Sep 2025 16:57:53 +0000
Subject: errors: add AsType

Fixes #51945

Change-Id: Icda169782e796578eba728938134a85b5827d3b6
GitHub-Last-Rev: c6ff335ee1ffb6b7975141795a4632a55247299d
GitHub-Pull-Request: golang/go#75621
Reviewed-on: https://go-review.googlesource.com/c/go/+/707235
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Sean Liao <sean@liao.dev>
---
 src/errors/example_test.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/errors/example_test.go')

diff --git a/src/errors/example_test.go b/src/errors/example_test.go
index 278df8c7da..92ef36b101 100644
--- a/src/errors/example_test.go
+++ b/src/errors/example_test.go
@@ -102,6 +102,18 @@ func ExampleAs() {
 	// Failed at path: non-existing
 }
 
+func ExampleAsType() {
+	if _, err := os.Open("non-existing"); err != nil {
+		if pathError, ok := errors.AsType[*fs.PathError](err); ok {
+			fmt.Println("Failed at path:", pathError.Path)
+		} else {
+			fmt.Println(err)
+		}
+	}
+	// Output:
+	// Failed at path: non-existing
+}
+
 func ExampleUnwrap() {
 	err1 := errors.New("error1")
 	err2 := fmt.Errorf("error2: [%w]", err1)
-- 
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