#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "esp_system.h"            // for esp_get_free_heap_size()
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"

void leakTask(void *pvParameters) {
    size_t start_heap = esp_get_free_heap_size();
    printf("Start free heap: %ul bytes\n", start_heap);
    int iteration = 0;
    while (1) {
        char *buffer = malloc(100);  // allocate 100 bytes each iteration
        if (buffer == NULL) {
            printf("Failed to allocate memory!\n");
            break;  // exit loop on allocation failure (out of memory)
        }
        // Use the allocated memory
        sprintf(buffer, "Iteration %d: Hello world!", iteration++);
        printf("%s\n", buffer);
        // Forgot to free 'buffer' -> memory leak each loop iteration
        // free(buffer);  // **Fix:** free the allocated memory to avoid leak
        if (iteration % 10 == 0) {  // every 10 iterations, report free heap
            printf("Free heap after %d iterations: %ul bytes\n", 
                   iteration, esp_get_free_heap_size());
        }
        vTaskDelay(pdMS_TO_TICKS(500));  // delay 500ms between iterations
    }
    vTaskDelete(NULL);
}

void app_main() {
    xTaskCreate(leakTask, "LeakTask", 4096, NULL, 1, NULL);
    // The LeakTask will run indefinitely (or until memory runs out).
    // No other tasks are created in this example.
    vTaskDelete(NULL);  // delete app_main task, LeakTask continues
}