From 579a320c1c81636726a1fb12fa612da7746effbc Mon Sep 17 00:00:00 2001
From: Jack Christensen <jack@jackchristensen.com>
Date: Thu, 9 May 2024 17:59:16 -0500
Subject: [PATCH] pgconn.SafeToRetry checks for wrapped errors

Use errors.As instead of type assertion.

Port 4e2e7a040579c1999c0766642d836eb28c6e2018 to v5

Credit to tjasko
---
 pgconn/errors.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pgconn/errors.go b/pgconn/errors.go
index 6790b9b6a..ecc9d332c 100644
--- a/pgconn/errors.go
+++ b/pgconn/errors.go
@@ -12,8 +12,9 @@ import (
 
 // SafeToRetry checks if the err is guaranteed to have occurred before sending any data to the server.
 func SafeToRetry(err error) bool {
-	if e, ok := err.(interface{ SafeToRetry() bool }); ok {
-		return e.SafeToRetry()
+	var retryableErr interface{ SafeToRetry() bool }
+	if errors.As(err, &retryableErr) {
+		return retryableErr.SafeToRetry()
 	}
 	return false
 }