++ Bugfixes:
+ 2011-06-26: Simon Goldschmidt
+ * mem.c: fixed bug #33545: With MEM_USE_POOLS==1, mem_malloc can return an
+ unaligned pointer.
+
2011-06-26: Simon Goldschmidt
* mem.c: fixed bug #33544 "warning in mem.c in lwip 1.4.0 with NO_SYS=1"
void *
mem_malloc(mem_size_t size)
{
+ void *ret;
struct memp_malloc_helper *element;
memp_t poolnr;
- mem_size_t required_size = size + sizeof(struct memp_malloc_helper);
+ mem_size_t required_size = size + LWIP_MEM_ALIGN_SIZE(sizeof(struct memp_malloc_helper));
for (poolnr = MEMP_POOL_FIRST; poolnr <= MEMP_POOL_LAST; poolnr = (memp_t)(poolnr + 1)) {
#if MEM_USE_POOLS_TRY_BIGGER_POOL
/* save the pool number this element came from */
element->poolnr = poolnr;
/* and return a pointer to the memory directly after the struct memp_malloc_helper */
- element++;
+ ret = (u8_t*)element + LWIP_MEM_ALIGN_SIZE(sizeof(struct memp_malloc_helper));
- return element;
+ return ret;
}
/**
void
mem_free(void *rmem)
{
- struct memp_malloc_helper *hmem = (struct memp_malloc_helper*)rmem;
+ struct memp_malloc_helper *hmem;
LWIP_ASSERT("rmem != NULL", (rmem != NULL));
LWIP_ASSERT("rmem == MEM_ALIGN(rmem)", (rmem == LWIP_MEM_ALIGN(rmem)));
/* get the original struct memp_malloc_helper */
- hmem--;
+ hmem = (struct memp_malloc_helper*)(void*)((u8_t*)rmem - LWIP_MEM_ALIGN_SIZE(sizeof(struct memp_malloc_helper)));
LWIP_ASSERT("hmem != NULL", (hmem != NULL));
LWIP_ASSERT("hmem == MEM_ALIGN(hmem)", (hmem == LWIP_MEM_ALIGN(hmem)));