Why array fails on assertion using g_array_append_vals?

Question

Trying to create a function to check available Vulkan extensions, however my executable runs and closes within a second with an error in terminal that I've barely managed to copy. It's a CMake project. The problem is in the function.

Function:

GArray* glfwExtensions, *requiredExtensions;
uint_fast32t glfwExtensionCount;
bool enableValidationLayers = true;

int __fastcall getRequiredExtensions() {
    glfwExtensions = g_array_new_take((char**)glfwGetRequiredInstanceExtensions(&glfwExtensionCount), glfwExtensionCount, false, __SIZEOF_POINTER__);
    g_array_append_vals(requiredExtensions, (const char**)(glfwExtensions->data), glfwExtensionCount);
    g_array_append_vals(requiredExtensions, (const char*[]){VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME}, 1);

    if (enableValidationLayers)
        g_array_append_vals(requiredExtensions, (const char*[]){VK_EXT_DEBUG_UTILS_EXTENSION_NAME}, 1);

    return EXIT_SUCCESS;
}

Output in terminal:

(proces:8144): GLib-CRITICAL **: 16:31:15.244: g_array_append_vals: assertion 'array' failed

(proces:8144): GLib-CRITICAL **: 16:31:15.260: g_array_append_vals: assertion 'array' failed

(proces:8144): GLib-CRITICAL **: 16:31:15.261: g_array_append_vals: assertion 'array' failed

CMakeLists.txt:

cmake_minimum_required (VERSION 3.31)

set (CMAKE_C_STANDARD 99)
set (CMAKE_C_STANDARD_REQUIRED on)

set (CMAKE_C_COMPILER "D:/msys2/ucrt64/bin/gcc.exe")
set (CMAKE_CXX_COMPILER "D:/msys2/ucrt64/bin/g++.exe")
set (CMAKE_RUNTIME_OUTPUT_DIRECTORY "D:/my_proj/")
set (CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG "${CMAKE_SOURCE_DIR}/debug")

find_package (PkgConfig REQUIRED)
pkg_check_modules (GLIB REQUIRED IMPORTED_TARGET glib-2.0)
pkg_check_modules (GLFW REQUIRED IMPORTED_TARGET glfw3)
pkg_check_modules (VULKAN REQUIRED IMPORTED_TARGET vulkan)
pkg_check_modules (CGLM REQUIRED IMPORTED_TARGET cglm)

option (CGLM_SHARED "Shared build" ON)
option (CGLM_STATIC "Static build" OFF)
option (CGLM_USE_C99 "" OFF)
option (CGLM_USE_TEST "Enable Tests" OFF)

project (render C)
add_executable (render D:/my_proj/render.c)

# render
target_link_options(render PRIVATE
    "-m64"
    # "-mwindows"
)

target_include_directories (render PRIVATE
    ${GLIB_INCLUDE_DIRS}
    ${GLFW_INCLUDE_DIRS}
    ${VULKAN_INCLUDE_DIRS}
    ${CGLM_INCLUDE_DIRS})

target_compile_definitions (render PRIVATE
    ${GLIB_CFLAGS_OTHER}
    ${GLFW_CFLAGS_OTHER}
    ${VULKAN_CFLAGS_OTHER}
    ${CGLM_CFLAGS_OTHER})

target_link_directories (render PRIVATE
    ${GLIB_LIBRARY_DIRS}
    ${GLFW_LIBRARY_DIRS}
    ${VULKAN_LIBRARY_DIRS}
    ${CGLM_LIBRARY_DIRS})

target_link_libraries (render PRIVATE
    ${GLIB_LIBRARIES}
    ${GLFW_LIBRARIES}
    ${VULKAN_LIBRARIES}
    ${CGLM_LIBRARIES})

I tried to change the pointers from (const char*[]) to (char**), but the result is the same. I've re-read the GLib API, but there's no explanation for that whatsoever. As I've seen in other similar post with g_ptr_array_add(), that shows my GArray pointer is NULL, but I have no clue what may happen during a simple allocation with g_array_new_take().

UPD: I forgot to initialize requiredExtensions array facepalm. Also I rewrited the function from GArray to GPtrArray by the advice of @TingPing. Now the function looks like this:

GPtrArray *glfwExtensions, *requiredExtensions;
uint_fast32t glfwExtensionCount;
bool enableValidationLayers = true;

int __fastcall getRequiredExtensions() {
    {
        const char** glfwExtTemp = (const char**)glfwGetRequiredInstanceExtensions(&glfwExtensionCount);
        glfwExtensions = g_ptr_array_new_take((gpointer*)glfwExtTemp, glfwExtensionCount, NULL);
        requiredExtensions = g_ptr_array_copy(glfwExtensions, NULL, NULL);
    }
    // g_ptr_array_add(requiredExtensions, VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME); <-- THIS WORKS, WHY?!

    g_ptr_array_extend_and_steal(requiredExtensions, g_ptr_array_new_take((gpointer*)(char*[]){
        VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME,
    }, 1, NULL));

    if (enableValidationLayers)
        g_ptr_array_extend_and_steal(requiredExtensions, g_ptr_array_new_take((gpointer*)(char*[]){
            VK_EXT_DEBUG_UTILS_EXTENSION_NAME,
        }, 1, NULL));

    return EXIT_SUCCESS;
}

But now I have problem with the g_ptr_array_extend_and_steal calls. When I eject them from code it works, otherwise the program crashes. I can't use validation layers due to that (No debug extension correspondingly). Moreover, when I append one single element with g_ptr_array_add it works! What is the problem of appending multiple pointers with g_ptr_array_extend_and_steal?