gcc/testsuite/c-c++-common/analyzer/taint-realloc.c

   1 /* { dg-skip-if "requires hosted libstdc++ for stdlib realloc" { ! hostedlib } } */
   2
   3 #include "analyzer-decls.h"
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7
   8 /* realloc with tainted size.  */
   9
  10 void *p;
  11
  12 void __attribute__((tainted_args))
  13 test_1 (size_t sz) /* { dg-message "\\(1\\) function 'test_1' marked with '__attribute__\\(\\(tainted_args\\)\\)'" } */
  14 {
  15   void *q;
  16
  17   __analyzer_dump_state ("taint", sz); /* { dg-warning "state: 'tainted'" } */
  18
  19   q = realloc (p, sz);  /* { dg-warning "use of attacker-controlled value 'sz' as allocation size without upper-bounds checking" } */
  20 } /* { dg-warning "leak of 'q'" } */