| 
  
 test_41 
  | 
     ‘test_41’: events 1-4 
|   473 |   if (flag) { |  
 |      ^ |  
 |      | |  
 |      (1) following ‘true’ branch (when ‘flag != 0’)... |  
|   474 |     buffer = (char*)malloc(4096); |  
 |                     ~~~~~~~~~~~~ |  
 |                     | |  
 |                     (2) ...to here |  
 |                     (3) this call could return NULL |  
| [...] |  |  
|   479 |   buffer[0] = 'a'; /* { dg-warning "dereference of possibly-NULL 'buffer'" "possibly-NULL" } */ |  
 |   ~~~~~~~~~~~~~~~ |  
 |             | |  
 |             (4) ‘buffer’ could be NULL: unchecked value from (3) |  
 
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