(/home/sate/Testcases/c/cve/wireshark-1.2.0/plugins/mate/mate_parser.c) |
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| 2039 | | | static void Mateensure_buffer_stack (void) |
| 2040 | | | { |
| 2041 | | | int num_to_alloc; |
| 2042 | | | |
| 2043 | | | if (!(yy_buffer_stack)) { |
Event 1:
Skipping " if". yy_buffer_stack evaluates to true.
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| 2044 | | | |
| 2045 | | | |
| 2046 | | | |
| 2047 | | | |
| 2048 | | | |
| 2049 | | | num_to_alloc = 1; |
| 2050 | | | (yy_buffer_stack) = (struct yy_buffer_state**)Matealloc |
| 2051 | | | (num_to_alloc * sizeof(struct yy_buffer_state*) |
| 2052 | | | ); |
| 2053 | | | if ( ! (yy_buffer_stack) ) |
| 2054 | | | YY_FATAL_ERROR( "out of dynamic memory in Mateensure_buffer_stack()" ); |
| 2055 | | | |
| 2056 | | | memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*)); |
| 2057 | | | |
| 2058 | | | (yy_buffer_stack_max) = num_to_alloc; |
| 2059 | | | (yy_buffer_stack_top) = 0; |
| 2060 | | | return; |
| 2061 | | | } |
| 2062 | | | |
| 2063 | | | 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.
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| 2064 | | | |
| 2065 | | | |
| 2066 | | | int grow_size = 8 ; |
Event 3:
grow_size is set to 8.
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| 2067 | | | |
| 2068 | | | 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.
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| 2069 | | | (yy_buffer_stack) = (struct yy_buffer_state**)Materealloc |
| 2070 | | | ((yy_buffer_stack), |
| 2071 | | | 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 Materealloc() as the second argument. - This multiplication may overflow and it is used as the allocation size later.
See related event 4.
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| 2072 | [+] | | ); |
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