memory.h.ts
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memory.h.ts
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	export const freedSet = new Set<number>();

	const _mem: Record<number, unknown> = {};

	function fmtPtr(n: number): string {
	return '0x' + (0x100000000 + n).toString(16);
	}

	export function die(addr: number, msg: string): never {
	const bin = process.argv[1]?.split('/').pop() \|\| 'a.out';
	const pid = process.pid;
	const ptr = fmtPtr(addr);

	console.error(`${bin}(${pid}): malloc: *** error for object ${ptr}: ${msg}`);
	console.error(`${bin}(${pid}): malloc: *** set a breakpoint in malloc_error_break to debug`);
	process.exit(134);
	}

	export const mem: Record<number, unknown> = new Proxy(_mem, {
	get(target, prop) {
	const key = Number(prop);
	if (!isNaN(key) && freedSet.has(key)) {
	if (Ant.raw.stack?.includes('_free')) return target[key];
	die(key, 'use of deallocated pointer');
	}
	return target[key];
	},
	set(target, prop, value) {
	const key = Number(prop);
	if (!isNaN(key) && freedSet.has(key)) {
	die(key, 'use of deallocated pointer');
	}
	target[key] = value;
	return true;
	},
	deleteProperty(target, prop) {
	const key = Number(prop);
	if (!isNaN(key)) delete target[key];
	return true;
	}
	});

	export let brk: number = 0;
	export const arena = { mem: _mem, brk, freedSet };