consensus: fix ambiguous invalid gas limit error (#32405)

rizkyikiw42 · web-flow · commit 2e9c9b5e9815 · 2025-08-12T06:11:18.000-06:00
## Description

Correct symmetric tolerance in gas limit validation:
Replace ambiguous "+-=" with standard "+/-" in the error message.
Logic rejects when |header − parent| ≥ limit, so allowed range is |Δ| ≤
limit − 1.

No logic or functionality has been modified.
diff --git a/consensus/misc/gaslimit.go b/consensus/misc/gaslimit.go
@@ -32,7 +32,7 @@ func VerifyGaslimit(parentGasLimit, headerGasLimit uint64) error {
 	}
 	limit := parentGasLimit / params.GasLimitBoundDivisor
 	if uint64(diff) >= limit {
-		return fmt.Errorf("invalid gas limit: have %d, want %d +-= %d", headerGasLimit, parentGasLimit, limit-1)
+		return fmt.Errorf("invalid gas limit: have %d, want %d +/- %d", headerGasLimit, parentGasLimit, limit-1)
 	}
 	if headerGasLimit < params.MinGasLimit {
 		return fmt.Errorf("invalid gas limit below %d", params.MinGasLimit)

Original file line number	Diff line number	Diff line change
`@@ -32,7 +32,7 @@ func VerifyGaslimit(parentGasLimit, headerGasLimit uint64) error {`
`32`	`32`	`}`
`33`	`33`	`limit := parentGasLimit / params.GasLimitBoundDivisor`
`34`	`34`	`if uint64(diff) >= limit {`
`35`		`- return fmt.Errorf("invalid gas limit: have %d, want %d +-= %d", headerGasLimit, parentGasLimit, limit-1)`
	`35`	`+ return fmt.Errorf("invalid gas limit: have %d, want %d +/- %d", headerGasLimit, parentGasLimit, limit-1)`
`36`	`36`	`}`
`37`	`37`	`if headerGasLimit < params.MinGasLimit {`
`38`	`38`	`return fmt.Errorf("invalid gas limit below %d", params.MinGasLimit)`