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[ci] Soft-deprecate str_sprintf/str_snprintf to prevent hidden heap allocations

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J. Nick Koston
2026-01-14 15:48:22 -10:00
parent 71c922bb60
commit 06c619b2e0
1 changed files with 2 additions and 0 deletions
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esphome/core/helpers.h
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@@ -563,9 +563,11 @@ inline uint32_t fnv1_hash_object_id(const char *str, size_t len) {
}
/// snprintf-like function returning std::string of maximum length \p len (excluding null terminator).
/// @warning Allocates heap memory. Use snprintf() with a stack buffer instead.
std::string __attribute__((format(printf, 1, 3))) str_snprintf(const char *fmt, size_t len, ...);
/// sprintf-like function returning std::string.
/// @warning Allocates heap memory. Use snprintf() with a stack buffer instead.
std::string __attribute__((format(printf, 1, 2))) str_sprintf(const char *fmt, ...);
/// Concatenate a name with a separator and suffix using an efficient stack-based approach.