(/home/sate/Testcases/c/cve/wireshark-1.2.0/wiretap/ascend-scanner.c) |
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| 2289 | | | static void ascendensure_buffer_stack (void) |
| 2290 | | | { |
| 2291 | | | int num_to_alloc; |
| 2292 | | | |
| 2293 | | | if (!(yy_buffer_stack)) { |
Event 1:
Skipping " if". yy_buffer_stack evaluates to true.
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| 2294 | | | |
| 2295 | | | |
| 2296 | | | |
| 2297 | | | |
| 2298 | | | |
| 2299 | | | num_to_alloc = 1; |
| 2300 | | | (yy_buffer_stack) = (struct yy_buffer_state**)ascendalloc |
| 2301 | | | (num_to_alloc * sizeof(struct yy_buffer_state*) |
| 2302 | | | ); |
| 2303 | | | if ( ! (yy_buffer_stack) ) |
| 2304 | | | YY_FATAL_ERROR( "out of dynamic memory in ascendensure_buffer_stack()" ); |
| 2305 | | | |
| 2306 | | | memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*)); |
| 2307 | | | |
| 2308 | | | (yy_buffer_stack_max) = num_to_alloc; |
| 2309 | | | (yy_buffer_stack_top) = 0; |
| 2310 | | | return; |
| 2311 | | | } |
| 2312 | | | |
| 2313 | | | 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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| 2314 | | | |
| 2315 | | | |
| 2316 | | | int grow_size = 8 ; |
Event 3:
grow_size is set to 8.
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| 2317 | | | |
| 2318 | | | 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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| 2319 | | | (yy_buffer_stack) = (struct yy_buffer_state**)ascendrealloc |
| 2320 | | | ((yy_buffer_stack), |
| 2321 | | | 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 ascendrealloc() 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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| 2322 | [+] | | ); |
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