我在cygwin下gcc编译运行了您的malloc程序，编译没问题，运行产生Segmentation fault (核心已转储)

我在cygwin下gcc编译后，运行了您的malloc程序，编译没问题，运行产生Segmentation fault (核心已转储)Segmentation fault (核心已转储)，这是什么原因？
$ ./build/app.exe
Segmentation fault (核心已转储)

另外，在编译时，有多处警告产生，如下：

gcc -o src/app.o -c -g -Wall -Isrc/application src/app.c
gcc -o src/application/memAlloc/memheap.o -c -g -Wall -Isrc/application src/application/memAlloc/memheap.c
src/application/memAlloc/memheap.c: In function 'memheap_init':
src/application/memAlloc/memheap.c:141:37: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  141 |     uint32_t begin_align = MH_ALIGN((uint32_t)memheap, MH_ALIGN_SIZE);
      |                                     ^
src/application/memAlloc/memheap.c:58:44: note: in definition of macro 'MH_ALIGN'
   58 | #define MH_ALIGN(size, align)           (((size) + (align) - 1) & ~((align) - 1))
      |                                            ^~~~
src/application/memAlloc/memheap.c:142:43: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  142 |     uint32_t end_align   = MH_ALIGN_DOWN(((uint32_t)memheap) + MEMHEAP_SIZE, MH_ALIGN_SIZE);
      |                                           ^
src/application/memAlloc/memheap.c:67:43: note: in definition of macro 'MH_ALIGN_DOWN'
   67 | #define MH_ALIGN_DOWN(size, align)      ((size) & ~((align) - 1))
      |                                           ^~~~
src/application/memAlloc/memheap.c:157:16: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
  157 |     heap_ptr = (uint8_t *)begin_align;
      |                ^

觉皇/malloc

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