Skip to content

Fix cast alignment warning in heap_4.c and heap_5.c #771

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 5 commits into from
Sep 4, 2023
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 3 additions & 6 deletions portable/MemMang/heap_4.c
Original file line number Diff line number Diff line change
Expand Up @@ -444,7 +444,6 @@ void * pvPortCalloc( size_t xNum,
static void prvHeapInit( void ) /* PRIVILEGED_FUNCTION */
{
BlockLink_t * pxFirstFreeBlock;
uint8_t * pucAlignedHeap;
portPOINTER_SIZE_TYPE uxAddress;
size_t xTotalHeapSize = configTOTAL_HEAP_SIZE;

Expand All @@ -458,8 +457,6 @@ static void prvHeapInit( void ) /* PRIVILEGED_FUNCTION */
xTotalHeapSize -= ( size_t ) ( uxAddress - ( portPOINTER_SIZE_TYPE ) ucHeap );
}

pucAlignedHeap = ( uint8_t * ) uxAddress;

#if ( configENABLE_HEAP_PROTECTOR == 1 )
{
vApplicationGetRandomHeapCanary( &( xHeapCanary ) );
Expand All @@ -468,12 +465,12 @@ static void prvHeapInit( void ) /* PRIVILEGED_FUNCTION */

/* xStart is used to hold a pointer to the first item in the list of free
* blocks. The void cast is used to prevent compiler warnings. */
xStart.pxNextFreeBlock = ( void * ) heapPROTECT_BLOCK_POINTER( pucAlignedHeap );
xStart.pxNextFreeBlock = ( void * ) heapPROTECT_BLOCK_POINTER( uxAddress );
xStart.xBlockSize = ( size_t ) 0;

/* pxEnd is used to mark the end of the list of free blocks and is inserted
* at the end of the heap space. */
uxAddress = ( portPOINTER_SIZE_TYPE ) ( pucAlignedHeap + xTotalHeapSize );
uxAddress = ( portPOINTER_SIZE_TYPE ) ( uxAddress + xTotalHeapSize );
uxAddress -= ( portPOINTER_SIZE_TYPE ) xHeapStructSize;
uxAddress &= ~( ( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK );
pxEnd = ( BlockLink_t * ) uxAddress;
Expand All @@ -482,7 +479,7 @@ static void prvHeapInit( void ) /* PRIVILEGED_FUNCTION */

/* To start with there is a single free block that is sized to take up the
* entire heap space, minus the space taken by pxEnd. */
pxFirstFreeBlock = ( BlockLink_t * ) pucAlignedHeap;
pxFirstFreeBlock = ( BlockLink_t * ) uxAddress;
pxFirstFreeBlock->xBlockSize = ( size_t ) ( uxAddress - ( portPOINTER_SIZE_TYPE ) pxFirstFreeBlock );
pxFirstFreeBlock->pxNextFreeBlock = heapPROTECT_BLOCK_POINTER( pxEnd );

Expand Down
6 changes: 3 additions & 3 deletions portable/MemMang/heap_5.c
Original file line number Diff line number Diff line change
Expand Up @@ -138,9 +138,9 @@

#else /* if ( configENABLE_HEAP_PROTECTOR == 1 ) */

#define heapPROTECT_BLOCK_POINTER( pxBlock ) ( pxBlock )
#define heapPROTECT_BLOCK_POINTER( pxBlock ) ( pxBlock )

#define heapVALIDATE_BLOCK_POINTER( pxBlock ) ( pxBlock )
#define heapVALIDATE_BLOCK_POINTER( pxBlock )

#endif /* configENABLE_HEAP_PROTECTOR */

Expand Down Expand Up @@ -562,7 +562,7 @@ void vPortDefineHeapRegions( const HeapRegion_t * const pxHeapRegions ) /* PRIVI
if( ( xAddress & portBYTE_ALIGNMENT_MASK ) != 0 )
{
xAddress += ( portBYTE_ALIGNMENT - 1 );
xAddress &= ~portBYTE_ALIGNMENT_MASK;
xAddress &= ~( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK;

/* Adjust the size for the bytes lost to alignment. */
xTotalRegionSize -= ( size_t ) ( xAddress - ( portPOINTER_SIZE_TYPE ) pxHeapRegion->pucStartAddress );
Expand Down