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Code Issues Releases Wiki Activity

[ci] Block new scanf() usage to prevent ~9.8KB flash bloat

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J. Nick Koston
2026-01-30 20:21:43 -06:00
parent 3e11a9d8a5
commit e68b302bba
1 changed files with 1 additions and 1 deletions
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script/ci-custom.py
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@@ -767,7 +767,7 @@ def lint_no_scanf(fname, match):
func = match.group(1)
return (
f"{highlight(func + '()')} is not allowed in new ESPHome code. The scanf family "
f"pulls in ~9.8KB of flash on embedded platforms, and ESPHome doesn't otherwise "
f"pulls in ~7KB flash on ESP8266 and ~9KB on ESP32, and ESPHome doesn't otherwise "
f"need this code.\n"
f"Please use alternatives:\n"
f" - {highlight('parse_number<T>(str)')} for parsing integers/floats from strings\n"