From 3ad9995dfe7c14e8578afcc0ccdb2ee9d8c44db6 Mon Sep 17 00:00:00 2001
From: Jack Christensen <jack@jackchristensen.com>
Date: Mon, 24 Oct 2022 18:23:26 -0500
Subject: [PATCH] Exec checks if tx is closed

https://github.com/jackc/pgx/discussions/1350
---
 tx.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tx.go b/tx.go
index 24daf0f89..28a9af133 100644
--- a/tx.go
+++ b/tx.go
@@ -201,6 +201,10 @@ func (tx *dbTx) Rollback(ctx context.Context) error {
 
 // Exec delegates to the underlying *Conn
 func (tx *dbTx) Exec(ctx context.Context, sql string, arguments ...any) (commandTag pgconn.CommandTag, err error) {
+	if tx.closed {
+		return pgconn.CommandTag{}, ErrTxClosed
+	}
+
 	return tx.conn.Exec(ctx, sql, arguments...)
 }