From 0da15a7a19c97d38569ddbe3b919045834408c25 Mon Sep 17 00:00:00 2001
From: Alexey Lapshin <alexey.lapshin@espressif.com>
Date: Wed, 15 Feb 2023 15:01:52 +0700
Subject: [PATCH] build: add option COMPILER_DISABLE_GCC12_WARNINGS

---
 CMakeLists.txt                 | 5 +++++
 Kconfig                        | 7 +++++++
 tools/idf_py_actions/hints.yml | 5 +++++
 3 files changed, 17 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 111891ebce..5869c4c1e4 100644
--- a/CMakeLists.txt
+++ b/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"
diff --git a/Kconfig b/Kconfig
index 0265e12a11..4f56b70c34 100644
--- a/Kconfig
+++ b/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
diff --git a/tools/idf_py_actions/hints.yml b/tools/idf_py_actions/hints.yml
index 564553c57e..3a076619fb 100644
--- a/tools/idf_py_actions/hints.yml
+++ b/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