Only allow TTD and difficulty to be 0 for custom genesis.

- No need to reiterate that this is for developer mode since it's in the error already.
ethereum · Apr 22, 2024 · 0a0e1fe · 0a0e1fe
1 parent 823719b
commit 0a0e1fe
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
@@ -1872,13 +1872,15 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
 					Fatalf("Could not read genesis from database: %v", err)
 				}
 				if !genesis.Config.TerminalTotalDifficultyPassed {
-					Fatalf("Bad developer-mode genesis configuration: terminalTotalDifficultyPassed must be true in developer mode")
+					Fatalf("Bad developer-mode genesis configuration: terminalTotalDifficultyPassed must be true")
 				}
 				if genesis.Config.TerminalTotalDifficulty == nil {
-					Fatalf("Bad developer-mode genesis configuration: terminalTotalDifficulty must be specified.")
+					Fatalf("Bad developer-mode genesis configuration: terminalTotalDifficulty must be specified")
+				} else if genesis.Config.TerminalTotalDifficulty.Cmp(big.NewInt(0)) != 0 {
+					Fatalf("Bad developer-mode genesis configuration: terminalTotalDifficulty must be 0")
 				}
-				if genesis.Difficulty.Cmp(genesis.Config.TerminalTotalDifficulty) != 1 {
-					Fatalf("Bad developer-mode genesis configuration: genesis block difficulty must be > terminalTotalDifficulty")
+				if genesis.Difficulty.Cmp(big.NewInt(0)) != 0 {
+					Fatalf("Bad developer-mode genesis configuration: difficulty must be 0")
 				}
 			}
 			chaindb.Close()