diff options
Diffstat (limited to 'cpukit/libmisc/stackchk/check.c')
| -rw-r--r-- | cpukit/libmisc/stackchk/check.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/cpukit/libmisc/stackchk/check.c b/cpukit/libmisc/stackchk/check.c index 4b6d0a6a68..a51961c073 100644 --- a/cpukit/libmisc/stackchk/check.c +++ b/cpukit/libmisc/stackchk/check.c @@ -91,8 +91,15 @@ static inline bool Stack_check_Frame_pointer_in_range( ((_the_stack)->area) #else + /* + * We need this magic offset because during a task delete the task stack will + * be freed before we enter the task switch extension which checks the stack. + * The task stack free operation will write the next and previous pointers + * for the free list into this area. + */ #define Stack_check_Get_pattern_area( _the_stack ) \ - ((Stack_check_Control *) ((char *)(_the_stack)->area + HEAP_BLOCK_HEADER_SIZE)) + ((Stack_check_Control *) ((char *)(_the_stack)->area \ + + sizeof(Heap_Block) - HEAP_BLOCK_HEADER_SIZE)) #define Stack_check_Calculate_used( _low, _size, _high_water) \ ( ((char *)(_low) + (_size)) - (char *)(_high_water) ) |