diff --git a/components/bt/host/bluedroid/btc/profile/std/a2dp/bta_av_co.c b/components/bt/host/bluedroid/btc/profile/std/a2dp/bta_av_co.c
index f2668e2e04..e237c8363c 100644
--- a/components/bt/host/bluedroid/btc/profile/std/a2dp/bta_av_co.c
+++ b/components/bt/host/bluedroid/btc/profile/std/a2dp/bta_av_co.c
@@ -22,6 +22,7 @@
  *  BTC.
  *
  ******************************************************************************/
+#include "esp_attr.h"
 #include "string.h"
 #include "common/bt_target.h"
 #include "stack/a2d_api.h"
@@ -66,7 +67,7 @@
 #define BTA_AV_CO_SBC_MAX_BITPOOL  53
 
 /* SCMS-T protect info */
-const UINT8 bta_av_co_cp_scmst[BTA_AV_CP_INFO_LEN] = "\x02\x02\x00";
+const UINT8 bta_av_co_cp_scmst[BTA_AV_CP_INFO_LEN] =  { 2, 2, 0 };
 
 /* SBC SRC codec capabilities */
 const tA2D_SBC_CIE bta_av_co_sbc_caps = {
diff --git a/components/esp_common/include/esp_attr.h b/components/esp_common/include/esp_attr.h
index 3ada7d5a8b..bd122e39c9 100644
--- a/components/esp_common/include/esp_attr.h
+++ b/components/esp_common/include/esp_attr.h
@@ -161,6 +161,13 @@ extern "C" {
 // Forces to not inline function
 #define NOINLINE_ATTR __attribute__((noinline))
 
+#if !defined(__clang__) && __GNUC__ >= 15
+// Marks a character array as not null-terminated to avoid string-related optimizations or warnings
+#define NONSTRING_ATTR __attribute__ ((nonstring))
+#else
+#define NONSTRING_ATTR
+#endif
+
 // This allows using enum as flags in C++
 // Format: FLAG_ATTR(flag_enum_t)
 #ifdef __cplusplus
diff --git a/components/esp_driver_uart/include/driver/uart_wakeup.h b/components/esp_driver_uart/include/driver/uart_wakeup.h
index 4ac3665da0..2fab94f0af 100644
--- a/components/esp_driver_uart/include/driver/uart_wakeup.h
+++ b/components/esp_driver_uart/include/driver/uart_wakeup.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "esp_err.h"
+#include "esp_attr.h"
 #include "soc/soc_caps.h"
 #include "hal/uart_types.h"
 
@@ -45,7 +46,7 @@ typedef struct {
     '*' represents any symbol.
     The end character cannot be '*'.
     Example: "he**o" matches hello, heyyo. */
-    char wake_chars_seq[SOC_UART_WAKEUP_CHARS_SEQ_MAX_LEN];
+    NONSTRING_ATTR char wake_chars_seq[SOC_UART_WAKEUP_CHARS_SEQ_MAX_LEN];
 #endif
 
 } uart_wakeup_cfg_t;
diff --git a/components/esp_phy/esp32/include/phy_init_data.h b/components/esp_phy/esp32/include/phy_init_data.h
index 146a08af16..655eaac249 100644
--- a/components/esp_phy/esp32/include/phy_init_data.h
+++ b/components/esp_phy/esp32/include/phy_init_data.h
@@ -7,6 +7,7 @@
 #ifndef PHY_INIT_DATA_H
 #define PHY_INIT_DATA_H /* don't use #pragma once here, we compile this file sometimes */
 #include "esp_phy_init.h"
+#include "esp_attr.h"
 #include "sdkconfig.h"
 
 #ifdef __cplusplus
@@ -50,7 +51,7 @@ typedef struct {
  * @brief Country corresponds to PHY init data type structure
  */
 typedef struct {
-    char cc[PHY_COUNTRY_CODE_LEN];
+    NONSTRING_ATTR char cc[PHY_COUNTRY_CODE_LEN];
     uint8_t type;
 } phy_country_to_bin_type_t;
 #endif
diff --git a/components/esp_phy/esp32c2/include/phy_init_data.h b/components/esp_phy/esp32c2/include/phy_init_data.h
index 322b9bec8e..ea404dbd88 100644
--- a/components/esp_phy/esp32c2/include/phy_init_data.h
+++ b/components/esp_phy/esp32c2/include/phy_init_data.h
@@ -7,6 +7,7 @@
 #ifndef PHY_INIT_DATA_H
 #define PHY_INIT_DATA_H /* don't use #pragma once here, we compile this file sometimes */
 #include "esp_phy_init.h"
+#include "esp_attr.h"
 #include "sdkconfig.h"
 
 #ifdef __cplusplus
@@ -51,7 +52,7 @@ typedef struct {
  * @brief Country corresponds to PHY init data type structure
  */
 typedef struct {
-    char cc[PHY_COUNTRY_CODE_LEN];
+    NONSTRING_ATTR char cc[PHY_COUNTRY_CODE_LEN];
     uint8_t type;
 } phy_country_to_bin_type_t;
 #endif
diff --git a/components/esp_phy/esp32c3/include/phy_init_data.h b/components/esp_phy/esp32c3/include/phy_init_data.h
index 322b9bec8e..ea404dbd88 100644
--- a/components/esp_phy/esp32c3/include/phy_init_data.h
+++ b/components/esp_phy/esp32c3/include/phy_init_data.h
@@ -7,6 +7,7 @@
 #ifndef PHY_INIT_DATA_H
 #define PHY_INIT_DATA_H /* don't use #pragma once here, we compile this file sometimes */
 #include "esp_phy_init.h"
+#include "esp_attr.h"
 #include "sdkconfig.h"
 
 #ifdef __cplusplus
@@ -51,7 +52,7 @@ typedef struct {
  * @brief Country corresponds to PHY init data type structure
  */
 typedef struct {
-    char cc[PHY_COUNTRY_CODE_LEN];
+    NONSTRING_ATTR char cc[PHY_COUNTRY_CODE_LEN];
     uint8_t type;
 } phy_country_to_bin_type_t;
 #endif
diff --git a/components/esp_phy/esp32c5/include/phy_init_data.h b/components/esp_phy/esp32c5/include/phy_init_data.h
index 8a0eb24016..c3c126ac66 100644
--- a/components/esp_phy/esp32c5/include/phy_init_data.h
+++ b/components/esp_phy/esp32c5/include/phy_init_data.h
@@ -7,6 +7,7 @@
 #ifndef PHY_INIT_DATA_H
 #define PHY_INIT_DATA_H /* don't use #pragma once here, we compile this file sometimes */
 #include <stdint.h>
+#include "esp_attr.h"
 #include "esp_phy_init.h"
 #include "sdkconfig.h"
 
@@ -52,7 +53,7 @@ typedef struct {
  * @brief Country corresponds to PHY init data type structure
  */
 typedef struct {
-    char cc[PHY_COUNTRY_CODE_LEN];
+    NONSTRING_ATTR char cc[PHY_COUNTRY_CODE_LEN];
     uint8_t type;
 } phy_country_to_bin_type_t;
 #endif
diff --git a/components/esp_phy/esp32c6/include/phy_init_data.h b/components/esp_phy/esp32c6/include/phy_init_data.h
index 322b9bec8e..ea404dbd88 100644
--- a/components/esp_phy/esp32c6/include/phy_init_data.h
+++ b/components/esp_phy/esp32c6/include/phy_init_data.h
@@ -7,6 +7,7 @@
 #ifndef PHY_INIT_DATA_H
 #define PHY_INIT_DATA_H /* don't use #pragma once here, we compile this file sometimes */
 #include "esp_phy_init.h"
+#include "esp_attr.h"
 #include "sdkconfig.h"
 
 #ifdef __cplusplus
@@ -51,7 +52,7 @@ typedef struct {
  * @brief Country corresponds to PHY init data type structure
  */
 typedef struct {
-    char cc[PHY_COUNTRY_CODE_LEN];
+    NONSTRING_ATTR char cc[PHY_COUNTRY_CODE_LEN];
     uint8_t type;
 } phy_country_to_bin_type_t;
 #endif
diff --git a/components/esp_phy/esp32c61/include/phy_init_data.h b/components/esp_phy/esp32c61/include/phy_init_data.h
index 8a0eb24016..5eba276504 100644
--- a/components/esp_phy/esp32c61/include/phy_init_data.h
+++ b/components/esp_phy/esp32c61/include/phy_init_data.h
@@ -8,6 +8,7 @@
 #define PHY_INIT_DATA_H /* don't use #pragma once here, we compile this file sometimes */
 #include <stdint.h>
 #include "esp_phy_init.h"
+#include "esp_attr.h"
 #include "sdkconfig.h"
 
 #ifdef __cplusplus
@@ -52,7 +53,7 @@ typedef struct {
  * @brief Country corresponds to PHY init data type structure
  */
 typedef struct {
-    char cc[PHY_COUNTRY_CODE_LEN];
+    NONSTRING_ATTR char cc[PHY_COUNTRY_CODE_LEN];
     uint8_t type;
 } phy_country_to_bin_type_t;
 #endif
diff --git a/components/esp_phy/esp32s2/include/phy_init_data.h b/components/esp_phy/esp32s2/include/phy_init_data.h
index 322b9bec8e..ea404dbd88 100644
--- a/components/esp_phy/esp32s2/include/phy_init_data.h
+++ b/components/esp_phy/esp32s2/include/phy_init_data.h
@@ -7,6 +7,7 @@
 #ifndef PHY_INIT_DATA_H
 #define PHY_INIT_DATA_H /* don't use #pragma once here, we compile this file sometimes */
 #include "esp_phy_init.h"
+#include "esp_attr.h"
 #include "sdkconfig.h"
 
 #ifdef __cplusplus
@@ -51,7 +52,7 @@ typedef struct {
  * @brief Country corresponds to PHY init data type structure
  */
 typedef struct {
-    char cc[PHY_COUNTRY_CODE_LEN];
+    NONSTRING_ATTR char cc[PHY_COUNTRY_CODE_LEN];
     uint8_t type;
 } phy_country_to_bin_type_t;
 #endif
diff --git a/components/esp_phy/esp32s3/include/phy_init_data.h b/components/esp_phy/esp32s3/include/phy_init_data.h
index 322b9bec8e..ea404dbd88 100644
--- a/components/esp_phy/esp32s3/include/phy_init_data.h
+++ b/components/esp_phy/esp32s3/include/phy_init_data.h
@@ -7,6 +7,7 @@
 #ifndef PHY_INIT_DATA_H
 #define PHY_INIT_DATA_H /* don't use #pragma once here, we compile this file sometimes */
 #include "esp_phy_init.h"
+#include "esp_attr.h"
 #include "sdkconfig.h"
 
 #ifdef __cplusplus
@@ -51,7 +52,7 @@ typedef struct {
  * @brief Country corresponds to PHY init data type structure
  */
 typedef struct {
-    char cc[PHY_COUNTRY_CODE_LEN];
+    NONSTRING_ATTR char cc[PHY_COUNTRY_CODE_LEN];
     uint8_t type;
 } phy_country_to_bin_type_t;
 #endif
diff --git a/components/esp_wifi/CMakeLists.txt b/components/esp_wifi/CMakeLists.txt
index 2cd6ec22e2..99984c96e2 100644
--- a/components/esp_wifi/CMakeLists.txt
+++ b/components/esp_wifi/CMakeLists.txt
@@ -97,6 +97,12 @@ if(CONFIG_ESP_WIFI_ENABLED OR CONFIG_ESP_HOST_WIFI_ENABLED)
             target_link_libraries(${COMPONENT_LIB} PUBLIC ${blob})
         endforeach()
     endif()
+    # TODO IDF-13365: remove the following lines
+    if(CMAKE_C_COMPILER_ID MATCHES "GNU")
+        set_source_files_properties(regulatory/esp_wifi_regulatory.c
+                                    PROPERTIES COMPILE_FLAGS
+                                    -Wno-unterminated-string-initialization)
+    endif()
 endif()
 
 if(CONFIG_SPIRAM)
diff --git a/docs/doxygen/Doxyfile b/docs/doxygen/Doxyfile
index d293735204..3a45a310a0 100644
--- a/docs/doxygen/Doxyfile
+++ b/docs/doxygen/Doxyfile
@@ -362,6 +362,7 @@ PREDEFINED             = \
     IDF_DEPRECATED(X)= \
     IRAM_ATTR= \
     FORCE_INLINE_ATTR= \
+    NONSTRING_ATTR= \
     configSUPPORT_DYNAMIC_ALLOCATION=1 \
     configSUPPORT_STATIC_ALLOCATION=1 \
     configQUEUE_REGISTRY_SIZE=1 \