FIELD LOG — Blog

Blog

Every bug, build note, and half-finished theory that made it past the daily log and into something worth reading properly.

SPECIMEN — Mistakes — collected 16 Jul 2026

Two `if`s, One Already-Freed Node

My delete_node printed the right list on every run I tried by hand. AddressSanitizer disagreed — and it was right, for a reason plain output could never have shown me.

cpointerslinked-lists
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SPECIMEN — Mistakes — collected 14 Jul 2026

The Six-Hour UART Framing Bug

Every byte arrived correctly. The frames still fell apart under load — because the bug wasn't in the bytes, it was in the silence between them.

embeddeduartc
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SPECIMEN — Mistakes — collected 13 Jul 2026

The BST Deletion Bug That Took Three Days

A one-line assumption about parent pointers cost me three days — and taught me more about iterative BST deletion than any tutorial.

dsatrees
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SPECIMEN — Mistakes — collected 10 Jul 2026

The Off-By-One That Made My Ring Buffer Lie About Being Empty

A fixed-size circular buffer has exactly one hard part: telling 'empty' apart from 'full.' I found out the hard way which one I'd gotten wrong.

embeddedcdata-structures
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SPECIMEN — Mistakes — collected 9 Jul 2026

The Same Precedence Mistake, Four Times, Two Months Apart

I made the same operator-precedence mistake four separate times over six weeks. This isn't a story about learning a rule — it's about admitting the rule alone was never going to be enough.

cbitwiseoperators
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SPECIMEN — Mistakes — collected 8 Jul 2026

Two Typos, Two Compiler Errors, One Variadic Function

My first submission had two separate compiler errors in four lines, and both were arguments I'd already been warned about once before. Apparently once wasn't enough.

cvariadic-functions
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