build: add option COMPILER_DISABLE_GCC12_WARNINGS

CMakeLists.txt

@@ -179,6 +179,11 @@ if(NOT ${CMAKE_C_COMPILER_VERSION} VERSION_LESS 8.0.0)
     endif()
 endif()
 
+if(CONFIG_COMPILER_DISABLE_GCC12_WARNINGS)
+    list(APPEND compile_options "-Wno-address"
+                                "-Wno-use-after-free")
+endif()
+
 # GCC-specific options
 if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
     list(APPEND compile_options "-fstrict-volatile-bitfields"

Kconfig

@@ -505,6 +505,13 @@ mainmenu "Espressif IoT Development Framework Configuration"
 
                 This option can be enabled for RISC-V targets only.
 
+        config COMPILER_DISABLE_GCC12_WARNINGS
+            bool "Disable new warnings introduced in GCC 12"
+            default "n"
+            help
+                Enable this option if use GCC 12 or newer, and want to disable warnings which don't appear with
+                GCC 11.
+
         config COMPILER_DUMP_RTL_FILES
             bool "Dump RTL files during compilation"
             help

tools/idf_py_actions/hints.yml

@@ -294,3 +294,8 @@
 -
     re: "Error: libusb_open\\(\\) failed with LIBUSB_ERROR_ACCESS"
     hint: "OpenOCD process does not have permissions to access the USB JTAG/serial device. Please use 'LIBUSB_DEBUG=1 idf.py openocd' to find out the device name and check its access rights."
+
+-
+    re: "(-Werror=address|-Werror=use-after-free)"
+    hint: "The warning(s) '{}' may appear after compiler update above GCC-12\nTo suppress these warnings use 'idf.py menuconfig' to enable configure option 'Compiler options' -> 'Disable new warnings introduced in GCC 12'\nPlease note that this is not a permanent solution, and this option will be removed in a future update of the ESP-IDF.\nIt is strongly recommended to fix all warnings, as they may indicate potential issues!"
+    match_to_output: True