feat(compiler): a slice index is checked against its length

A slice has carried { ptr, len, cap } since it existed and nothing ever read the len: every index emitted a bare getelementptr. Running off the end of one wrote into whatever the allocator had put next, and the program died somewhere else entirely - a maroon-lake crash took a day to find because the stack named a texture upload and the write was in a telemetry buffer five frames earlier. Now each index loads the length and compares unsigned, which rejects a negative index in the same instruction, and a failure aborts with the location the other located errors use: oob.ludic:9: index out of range: 7, len 3 `words` and the other raw buffers are unchanged - they are a bare malloc with no length to check, which is the argument for moving off them. The SPIR-V variants are regenerated in the same commit: shaders --check was failing against the edited GLSL. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-22 20:54:12 +03:00 · 2026-09-22 20:54:12 +03:00 · 0998cb5a18
commit 0998cb5a18
parent f7f47152bd
77 changed files with 803 additions and 696 deletions
--- a/packages/ludic.render3d/shaders/spv/01089da8.frag.spv
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--- a/packages/ludic.render3d/shaders/spv/manifest.txt
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