Fix test

packages/evm/src/precompiles/07-ecmul.ts

@@ -1,6 +1,9 @@
 import { bytesToHex, short } from '@ethereumjs/util'
 
-import { OOGResult } from '../evm.js'
+import { EvmErrorResult, OOGResult } from '../evm.js'
+import { ERROR, EvmError } from '../exceptions.js'
+
+import { equalityLengthCheck } from './util.js'
 
 import type { EVM } from '../evm.js'
 import type { ExecResult } from '../types.js'
@@ -23,6 +26,14 @@ export function precompile07(opts: PrecompileInput): ExecResult {
     return OOGResult(opts.gasLimit)
   }
 
+  if (!equalityLengthCheck(opts, 128, 'ECMUL (0x07)')) {
+    // TODO: I changed opts.gasLimit (as being used for BLS) to gasUsed
+    // This passes the local npx vitest run test/precompiles/07-ecmul.spec.ts test,
+    // getting to the expected 40000 (instead of 65535), a bit spooky though.
+    // Should be analyzed if both cases (BLS and BN254) are correctly applied.
+    return EvmErrorResult(new EvmError(ERROR.INVALID_INPUT_LENGTH), gasUsed)
+  }
+
   const returnData = (opts._EVM as EVM)['_bn254'].mul(opts.data.subarray(0, 128))
 
   // check ecmul success or failure by comparing the output length