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fix!: Gates command should always return 8 bytes #2631

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Merged
TomAFrench merged 1 commit into from
Oct 3, 2023
Merged

fix!: Gates command should always return 8 bytes #2631

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10 changes: 9 additions & 1 deletion barretenberg/ts/src/main.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,15 @@ export async function prove(
export async function gateCount(bytecodePath: string) {
const api = await Barretenberg.new(1);
try {
process.stdout.write(`${await getGates(bytecodePath, api)}`);
const numberOfGates = await getGates(bytecodePath, api);

// Create an 8-byte buffer and write the number into it.
// Writing number directly to stdout will result in a variable sized
// input depending on the size.
const buffer = Buffer.alloc(8);
buffer.writeBigInt64LE(BigInt(numberOfGates));

process.stdout.write(buffer);
} finally {
await api.destroy();
}
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