Conversation

Notices

1. Embed this notice
   Steve's Place (steter@mastodon.stevesworld.co)'s status on Monday, 03-Feb-2025 15:15:36 JST Steve's Place

   There is a weird bug in an initialization routine that causes a stack dump when I add the first element to a key->value mapping in a function. I'm not sure why. It was very stubborn to get rid of, and makes no sense.

   The stack dump indicated an Add operation was causing the failure in an ensure. I created an empty value, in case there was something up with the (should be) identical null value in the Add function. Nope. I wound up initializing the map with a single key->value pair at compile time, then clearing that value when the initialization code ran. The stack dump is gone, but brand new bugs in a different area appeared. What fun.

   Who doesn't love C++ expressed as blueprints?

   #GameDev #UE5 #RTS #debugging

   • Embed this notice
     Steve's Place (steter@mastodon.stevesworld.co)'s status on Monday, 03-Feb-2025 16:29:42 JST Steve's Place

     in reply to

     • Vortec Space

     @babble_endanger It's a simple call in a script that compiles. It's the first of a series of Add calls to initialize a key->value array. The error is thrown in an editor runtime library. The script may be in error (passing the value of a key vs its address). But I suspect it's from an old crash when this script was open and not saved that resulted in a broken pointer which, when I don't initialize the mapping with a single value, is passed to the Add routine the first time by mistake. Once that happens, the rest of the array initializes, but the first element in that array for the first class in the game that runs the code is not correctly initialized. I love one-time bugs. Just cleaning up the code.

   • Embed this notice
     Vortec Space (babble_endanger@freeradical.zone)'s status on Monday, 03-Feb-2025 16:29:43 JST Vortec Space

     in reply to

     @steter yep sounds like c++

   • Embed this notice
     Vortec Space (babble_endanger@freeradical.zone)'s status on Monday, 03-Feb-2025 16:29:43 JST Vortec Space

     in reply to

     @steter That is, trying to do the simplest thing and getting memory unsafety issues

     If you can minimize it, I'd like to see the code that triggers this 👀