tools: Mass fixing of empty prototypes (for -Wstrict-prototypes)

components/heap/heap_caps.c

@@ -446,7 +446,7 @@ void heap_caps_dump(uint32_t caps)
     }
 }
 
-void heap_caps_dump_all()
+void heap_caps_dump_all(void)
 {
     heap_caps_dump(MALLOC_CAP_INVALID);
 }

components/heap/heap_caps_init.c

@@ -39,7 +39,7 @@ static void register_heap(heap_t *region)
     }
 }
 
-void heap_caps_enable_nonos_stack_heaps()
+void heap_caps_enable_nonos_stack_heaps(void)
 {
     heap_t *heap;
     SLIST_FOREACH(heap, &registered_heaps, next) {
@@ -57,7 +57,7 @@ void heap_caps_enable_nonos_stack_heaps()
 /* Initialize the heap allocator to use all of the memory not
    used by static data or reserved for other purposes
  */
-void heap_caps_init()
+void heap_caps_init(void)
 {
     /* Get the array of regions that we can use for heaps
        (with reserved memory removed already.)

components/heap/include/esp_heap_caps.h

@@ -308,7 +308,7 @@ void heap_caps_dump(uint32_t caps);
  * Output is the same as for heap_caps_dump.
  *
  */
-void heap_caps_dump_all();
+void heap_caps_dump_all(void);
 
 #ifdef __cplusplus
 }

components/heap/include/esp_heap_caps_init.h

@@ -27,7 +27,7 @@ extern "C" {
  * This is called once in the IDF startup code. Do not call it
  * at other times.
  */
-void heap_caps_init();
+void heap_caps_init(void);
 
 /**
  * @brief Enable heap(s) in memory regions where the startup stacks are located.
@@ -37,7 +37,7 @@ void heap_caps_init();
  * completely started, they do not use that memory anymore and heap(s) there can
  * be enabled.
  */
-void heap_caps_enable_nonos_stack_heaps();
+void heap_caps_enable_nonos_stack_heaps(void);
 
 /**
  * @brief Add a region of memory to the collection of heaps at runtime.

components/heap/test/test_malloc.c

@@ -21,7 +21,7 @@ static int **allocatedMem;
 static int noAllocated;
 
 
-static int tryAllocMem() {
+static int tryAllocMem(void) {
     int i, j;
     const int allocateMaxK=1024*5; //try to allocate a max of 5MiB
 
@@ -38,7 +38,7 @@ static int tryAllocMem() {
 }
 
 
-static void tryAllocMemFree() {
+static void tryAllocMemFree(void) {
     int i, j;
     for (i=0; i<noAllocated; i++) {
         for (j=0; j<1024/4; j++) {

components/heap/test/test_malloc_caps.c

@@ -114,7 +114,7 @@ TEST_CASE("heap_caps metadata test", "[heap]")
 /* Small function runs from IRAM to check that malloc/free/realloc
    all work OK when cache is disabled...
 */
-static IRAM_ATTR __attribute__((noinline)) bool iram_malloc_test()
+static IRAM_ATTR __attribute__((noinline)) bool iram_malloc_test(void)
 {
     spi_flash_guard_get()->start(); // Disables flash cache