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[core] Fix PROGMEM_STRING_TABLE placement on ESP8266 without flash log strings (#16373)

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Jonathan Swoboda
2026-05-12 11:19:10 -04:00
committed by GitHub
parent 4ff946ac15
commit 365ed19319
1 changed files with 14 additions and 2 deletions
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esphome/core/progmem.h
+14 -2
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@@ -25,6 +25,16 @@
#define ESPHOME_strncasecmp_P strncasecmp_P
// Type for pointers to PROGMEM strings (for use with ESPHOME_F return values)
using ProgmemStr = const __FlashStringHelper *;
// Storage class for PROGMEM_STRING_TABLE data. Mirrors the logger's choice of
// LOG_STR_ARG: when LOG_STR_ARG treats the LogString as PROGMEM (PGM_P), the
// table data must actually be in flash; when LOG_STR_ARG treats it as a plain
// const char* (assumes RAM), the table data must live in RAM or non-logger
// consumers (ArduinoJson, Print, MQTT publish) crash on unaligned flash reads.
#ifdef USE_STORE_LOG_STR_IN_FLASH
#define ESPHOME_PROGMEM_STRING_TABLE_STORAGE PROGMEM
#else
#define ESPHOME_PROGMEM_STRING_TABLE_STORAGE
#endif
#else
#define ESPHOME_F(string_literal) (string_literal)
#define ESPHOME_PGM_P const char *
@@ -38,6 +48,8 @@ using ProgmemStr = const __FlashStringHelper *;
#define ESPHOME_strncasecmp_P strncasecmp
// Type for pointers to strings (no PROGMEM on non-ESP8266 platforms)
using ProgmemStr = const char *;
// No-op on non-ESP8266 platforms where PROGMEM itself is a no-op.
#define ESPHOME_PROGMEM_STRING_TABLE_STORAGE
#endif
namespace esphome {
@@ -100,8 +112,8 @@ struct LogString;
static constexpr size_t COUNT = Table::COUNT; \
static constexpr uint8_t LAST_INDEX = COUNT - 1; \
static constexpr size_t BLOB_SIZE = Table::BLOB_SIZE; \
static constexpr auto BLOB PROGMEM = Table::make_blob(); \
static constexpr auto OFFSETS PROGMEM = Table::make_offsets(); \
static constexpr auto BLOB ESPHOME_PROGMEM_STRING_TABLE_STORAGE = Table::make_blob(); \
static constexpr auto OFFSETS ESPHOME_PROGMEM_STRING_TABLE_STORAGE = Table::make_offsets(); \
static const char *get_(uint8_t idx, uint8_t fallback) { \
if (idx >= COUNT) \
idx = fallback; \