feat(cxx): get rid of _Unwind_SetEnableExceptionFdeSorting

components/cxx/CMakeLists.txt

@@ -11,7 +11,6 @@ idf_component_register(SRCS "cxx_exception_stubs.cpp"
 
 if(NOT CONFIG_CXX_EXCEPTIONS)
     set(WRAP_FUNCTIONS
-        _Unwind_SetEnableExceptionFdeSorting
         __register_frame_info_bases
         __register_frame_info
         __register_frame

components/cxx/cxx_exception_stubs.cpp

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2021-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -35,11 +35,6 @@ static T abort_return()
 }
 
 // unwind-dw2-fde.o
-extern "C" void __wrap__Unwind_SetEnableExceptionFdeSorting(unsigned char enable)
-{
-    abort();
-}
-
 extern "C" void __wrap___register_frame_info_bases (const void *begin, struct object *ob, void *tbase, void *dbase)
 {
     abort();

components/esp_system/startup.c

@@ -144,8 +144,6 @@ const sys_startup_fn_t g_startup_fn[1] = { start_cpu0 };
 #ifdef CONFIG_COMPILER_CXX_EXCEPTIONS
 // workaround for C++ exception crashes
 void _Unwind_SetNoFunctionContextInstall(unsigned char enable) __attribute__((weak, alias("_Unwind_SetNoFunctionContextInstall_Default")));
-// workaround for C++ exception large memory allocation
-void _Unwind_SetEnableExceptionFdeSorting(unsigned char enable);
 
 static IRAM_ATTR void _Unwind_SetNoFunctionContextInstall_Default(unsigned char enable __attribute__((unused)))
 {
@@ -542,7 +540,6 @@ ESP_SYSTEM_INIT_FN(init_components0, BIT(0), 200)
 #ifdef CONFIG_COMPILER_CXX_EXCEPTIONS
     ESP_EARLY_LOGD(TAG, "Setting C++ exception workarounds.");
     _Unwind_SetNoFunctionContextInstall(1);
-    _Unwind_SetEnableExceptionFdeSorting(0);
 #endif // CONFIG_COMPILER_CXX_EXCEPTIONS
 
     return ESP_OK;