ci2/tests/04_memory_exception.c

/* - | Copyright | --------------------------------------------------------------
   Copyright (c) 2026 Randy Jordan

   Permission is hereby granted, free of charge, to any person obtaining a copy of 
   this software and associated documentation files (the "Software"), to deal in 
   the Software without restriction, including without limitation the rights to 
   use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 
   of the Software, and to permit persons to whom the Software is furnished to do 
   so, subject to the following conditions:

   The above copyright notice and this permission notice shall be included in all 
   copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
   SOFTWARE.

 * --------------------------------------------------------------------------*/
#define DEBUG
#define GUI_DEBUG_CLOSE

#include "../include/ci2.h"
#include <stdlib.h>
#include <string.h>

static int test_caught_exception(){
    size_t nbytes = CI2_GB(1024);
    void *buf = NULL;
    const char *str = "Hello World";
    buf = CI2_CALLOC(1,strlen(str+1)); /* You have no enable asan options. */
    strncpy(buf,str,strlen(str));
    
    char *opts = "ASAN_OPTIONS=allocator_may_fail=1";

    printf("Attempting oom re-allocation of %ld at %p\n", nbytes, buf);
    printf("Adding %s to env....%d\n",opts, putenv(opts));
    
    CI2_TRY {
        printf("Trying something dumb.\n");
        CI2_RESIZE(buf, nbytes);
    }
    CI2_EXCEPT(oom) {
        /* handle memory failure gracefully */
        printf("Caught: %d: %s\n", oom.num, oom.msg);
        return EXIT_SUCCESS; /* requested behavior */
    }
    CI2_FINALLY {
        /* cleanup if needed, runs always */
        printf("Have to free allocation of %ld at %p\n",strlen(buf), buf );
        if (buf) free(buf);
    }
    CI2_END_TRY;
    return EXIT_FAILURE;
}
static int test_uncaught_exception(void){
#ifdef CI2_EXCEPTION_CRASH
    printf("CI2_MSG — Deliberate Failure (expect a debug break)\n");
    printf("  Triggering ci2_raise_exception() now...\n");
    fflush(stdout);

    struct CI2_Exception u = { EFAULT, "Deliberate uncaught exception test."};
    CI2_RAISE(u);
    printf("  [FAIL] Execution continued past a failing ASSERT_MSG!\n");
    return EXIT_SUCCESS; // Shouldn't but still.
#endif
    return EXIT_SUCCESS;
}

#ifdef CI2_WINDOWS
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
    (void)hInstance;
    (void)hPrevInstance;
    (void)lpCmdLine;    
    (void) nShowCmd;
    if (!ci2_init()) {
        MessageBoxA(NULL, "ci2_init failed", "Error", MB_OK | MB_ICONERROR);
        return EXIT_FAILURE;
    }
    static ci2_sys_char *ci2_window_title = L"Win32 CI2 Window Title";
    CI2_Window* window = ci2_create_window(ci2_window_title, 800, 600);
    if (!window) {
        MessageBoxA(NULL, "ci2_create_window failed", "Error", MB_OK | MB_ICONERROR);
        ci2_shutdown();
        return EXIT_FAILURE;
    }

    // 4) Main loop: run until ci2_poll_events reports the window should close.
    //    This loop is friendly to rendering or other per-frame work.
    int result = -1;
    while (ci2_poll_events(window)) {
        // Per-frame update/render would go here.
        // Example: simple sleep to avoid busy-looping; adjust to suit your app's timing.
        
        result = test_uncaught_exception();
        result = test_caught_exception();
        Sleep(1);
        #ifdef GUI_DEBUG_CLOSE
            break;
        #endif
    }

    // 5) Destroy window and shutdown ci2.
    ci2_destroy_window(window);
    ci2_shutdown();

    return result;
}
#else /* non-Windows (Linux, macOS, etc.) */
#include <unistd.h>
int main(int argc, ci2_sys_char *argv[])
{
    UNUSED(argc);
    UNUSED(argv);
    if (!ci2_init()) return 1;

    static ci2_sys_char *ci2_window_title = "Linux CI2 Window Title";
    CI2_Window* window = ci2_create_window(ci2_window_title, 800, 600);
    if (!window) return 1;

    int result = -1;
    while (ci2_poll_events(window)) {
        // Your rendering / game loop goes here

        result = test_uncaught_exception();
        result = test_caught_exception();
        sleep(1);
        #ifdef GUI_DEBUG_CLOSE
            break;
        #endif
    }

    ci2_destroy_window(window);
    ci2_shutdown();
    return result;
}
#endif