(/home/sate/Testcases/c/cve/wireshark-1.2.0/epan/uat_load.c) |
| |
| 1709 | | | static void uat_load_ensure_buffer_stack (void) |
| 1710 | | | { |
| 1711 | | | int num_to_alloc; |
| 1712 | | | |
| 1713 | | | if (!(yy_buffer_stack)) { |
Event 1:
Skipping " if". yy_buffer_stack evaluates to true.
hide
|
|
| 1714 | | | |
| 1715 | | | |
| 1716 | | | |
| 1717 | | | |
| 1718 | | | |
| 1719 | | | num_to_alloc = 1; |
| 1720 | | | (yy_buffer_stack) = (struct yy_buffer_state**)uat_load_alloc |
| 1721 | | | (num_to_alloc * sizeof(struct yy_buffer_state*) |
| 1722 | | | ); |
| 1723 | | | if ( ! (yy_buffer_stack) ) |
| 1724 | | | YY_FATAL_ERROR( "out of dynamic memory in uat_load_ensure_buffer_stack()" ); |
| 1725 | | | |
| 1726 | | | memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*)); |
| 1727 | | | |
| 1728 | | | (yy_buffer_stack_max) = num_to_alloc; |
| 1729 | | | (yy_buffer_stack_top) = 0; |
| 1730 | | | return; |
| 1731 | | | } |
| 1732 | | | |
| 1733 | | | if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){ |
Event 2:
Taking true branch. yy_buffer_stack_top >= yy_buffer_stack_max - 1 evaluates to true.
hide
|
|
| 1734 | | | |
| 1735 | | | |
| 1736 | | | int grow_size = 8 ; |
Event 3:
grow_size is set to 8.
hide
|
|
| 1737 | | | |
| 1738 | | | num_to_alloc = (yy_buffer_stack_max) + grow_size; |
Event 4:
num_to_alloc is set to yy_buffer_stack_max + 8. - Determines the allocation size later.
See related event 3.
hide
|
|
| 1739 | | | (yy_buffer_stack) = (struct yy_buffer_state**)uat_load_realloc |
| 1740 | | | ((yy_buffer_stack), |
| 1741 | | | num_to_alloc * sizeof(struct yy_buffer_state*) |
Event 5:
4 * num_to_alloc, which evaluates to 4 * yy_buffer_stack_max + 32, is passed to uat_load_realloc() as the second argument. - This multiplication may overflow and it is used as the allocation size later.
See related event 4.
hide
|
|
| 1742 | [+] | | ); |
 |
| |