Crash when setting width/height on canvas: core dumped

[948764321]

Title: Intermittent bug in canvas. width assignment after specific operations (v3.1.1)

Description:
After updating to node-canvas v3.1.1, my application started failing intermittently when assigning values to canvas.width.

Key observations:

The failure occurs only in my existing application code

Cannot reproduce with a minimal standalone demo containing only canvas. width assignments

The critical difference:

In my application, additional operations precede the canvas. width assignment

These pre-assignment operations appear to trigger the failure

Evidence:
The same error occurs in

import { createCanvas } from 'canvas';
import fs from 'node:fs';

const canvas = createCanvas(1, 1, 'pdf');
const context = canvas.getContext('2d');

context.canvas.width = 595.3; // <------- crashes
context.canvas.width = 595.3; // <------- crashes
context.canvas.width = 595.3; // <------- crashes
context.canvas.width = 595.3; // <------- crashes
context.canvas.height = 595.3; // <------- crashes

context.fillStyle = 'green';
context.fillRect(10, 10, 150, 100);

const pngStream = canvas.createPDFStream();
const out = fs.createWriteStream('./output.pdf');
pngStream.pipe(out);

out.once('finish', () => {
  console.log('✓ saved as output.pdf');
});

suggesting this is a regression in v3.1.1 related to canvas state management when modifying properties after certain operations.

[chearon]

Thanks. I can reproduce the problem and I think I know what caused it. I'll have a fix soon.