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This commit is contained in:
J. Nick Koston
2025-11-15 18:02:54 -06:00
parent 0d147e5d10
commit 554cdbd5a4
1 changed files with 3 additions and 1 deletions
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4
esphome/components/logger/logger.h
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@@ -458,7 +458,9 @@ class Logger : public Component {
} }
// Update buffer_at with the formatted length (handle truncation) // Update buffer_at with the formatted length (handle truncation)
uint16_t formatted_len = (ret >= remaining) ? remaining : ret; // When vsnprintf truncates (ret >= remaining), it writes (remaining - 1) chars + null terminator
// When it doesn't truncate (ret < remaining), it writes ret chars + null terminator
uint16_t formatted_len = (ret >= remaining) ? (remaining - 1) : ret;
*buffer_at += formatted_len; *buffer_at += formatted_len;
// Remove all trailing newlines right after formatting // Remove all trailing newlines right after formatting