Web version locks up on Python syntax errors

[nsxdavid]

When coding in Python, any syntax error will lock up on run.

For example, this line:

if btn(0) == 1: x+=1

On the exe version, will result in a proper error:

run
error while running TIC

Traceback (most recent call last):
File "", line 22
if btn(0) == 1: x+=4
TypeError: expected 'bool', but got
'int'

But when running on the Web version (on the create page), this will simply lock up the app and the page has to be refreshed to start using it again.

Version: 1.1.2736

[sogaiu]

That happens for me too at https://tic80.com/create.

It doesn't necessarily lock up for other languages. I only tested janet and lua though.

[blueloveTH]

I can reproduce. Will look at it.

[blueloveTH]

After some investigation, I've found the reason of this locking up.

pocketpy needs c++ exceptions to be enabled to handle errors. According to emscripten's docs:

First, you can enable exceptions via Emscripten’s JavaScript-based support. To enable it, pass -fexceptions at both compile time and link time.

Although pocketpy itself always use -fexceptions flag, it is missing when linking with tic80's executable. So the exceptions won't be enabled in web platform.

The Solution

In CMakeLists.txt, add -fexceptions as a linker flags to the executable.

[nesbox]

fixed with #2315