From 8ec638dc5e2cda7d6535ff94f3d1661af13f200e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Mon, 5 Feb 2024 23:01:56 +0200
Subject: [PATCH] internal/flags: fix --miner.gasprice default listing (#28932)

---
 internal/flags/flags.go | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/internal/flags/flags.go b/internal/flags/flags.go
index 69e974355..bf62c53ad 100644
--- a/internal/flags/flags.go
+++ b/internal/flags/flags.go
@@ -256,7 +256,8 @@ type BigFlag struct {
 	Hidden     bool
 	HasBeenSet bool
 
-	Value *big.Int
+	Value        *big.Int
+	defaultValue *big.Int
 
 	Aliases []string
 	EnvVars []string
@@ -269,6 +270,10 @@ func (f *BigFlag) IsSet() bool     { return f.HasBeenSet }
 func (f *BigFlag) String() string  { return cli.FlagStringer(f) }
 
 func (f *BigFlag) Apply(set *flag.FlagSet) error {
+	// Set default value so that environment wont be able to overwrite it
+	if f.Value != nil {
+		f.defaultValue = new(big.Int).Set(f.Value)
+	}
 	for _, envVar := range f.EnvVars {
 		envVar = strings.TrimSpace(envVar)
 		if value, found := syscall.Getenv(envVar); found {
@@ -283,7 +288,6 @@ func (f *BigFlag) Apply(set *flag.FlagSet) error {
 		f.Value = new(big.Int)
 		set.Var((*bigValue)(f.Value), f.Name, f.Usage)
 	})
-
 	return nil
 }
 
@@ -310,7 +314,7 @@ func (f *BigFlag) GetDefaultText() string {
 	if f.DefaultText != "" {
 		return f.DefaultText
 	}
-	return f.GetValue()
+	return f.defaultValue.String()
 }
 
 // bigValue turns *big.Int into a flag.Value