Processing doesn't say where the error is

joshg · June 25, 2025, 4:40am

FYI this didn’t get forgotten, and it’s being looked in to.

No stack trace or thrower position highlighting on exception

opened 05:38PM - 17 Jun 25 UTC

bug help wanted good first issue pde

### Most appropriate sub-area of Processing 4? PDE ### Processing version 4.4….4 ### Operating system Ubuntu 24.04, Windows 10 ### Bug description The location of an exception (e.g. NullPointerException) is not highlighted, nor is a stack trace printed. The only information printed is a red NullPointerException message at the bottom. There is no obvious way how to find out where this was thrown. This seems to be a regression to earlier 3.x versions, where the line of the thrower would be at least highlighted. ### Steps to reproduce this "1. open the below snippet in PDE 2. run the snippet 3. observe that the error message (NullPointerException) is not linked to any position in the code, nor is any position in the code highlighted, nor is a stack-trace or similar printed anywhere" ### snippet ``` PVector [] vs = new PVector[10]; for (int i=0;i<vs.length;++i) vs[i].set(0,0); // <-- this position should be contained in the error message ``` ### Additional context real showstopper when trying to debug any bigger program in PDE! ### Would you like to work on the issue? No, I’m just reporting the issue

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Processing doesn't say where the error is

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