gcc/testsuite/g++.dg/warn/Warray-bounds-10.C

   1 /* PR c++/97201 - ICE in -Warray-bounds writing to result of operator new(0)
   2    Verify that out-of-bounds accesses to memory returned by default operator
   3    new() are diagnosed.
   4    { dg-do compile }
   5    { dg-options "-O2 -Wall -Warray-bounds -ftrack-macro-expansion=0" } */
   6
   7 typedef __INT32_TYPE__ int32_t;
   8
   9 void sink (void*);
  10
  11 #define OP_NEW(n)  operator new (n)
  12 #define T(T, n, i) do {                         \
  13     T *p = (T*) OP_NEW (n);                     \
  14     p[i] = 0;                                   \
  15     sink (p);                                   \
  16   } while (0)
  17
  18 void warn_op_new ()
  19 {
  20   T (int32_t, 0, 0);          // { dg-warning "array subscript 0 is outside array bounds of 'int32_t \\\[0]'" }
  21                               // { dg-message "object of size \\d allocated by '\[^\n\r]*operator new\[^\n\r]*'" "note" { target *-*-* } .-1 }
  22   T (int32_t, 1, 0);          // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[1]'" }
  23   T (int32_t, 2, 0);         //  { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[2]'" }
  24   T (int32_t, 3, 0);         // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[3]'" }
  25
  26   T (int32_t, 4, 0);
  27
  28   T (int32_t, 0, 1);          // { dg-warning "array subscript 1 is outside array bounds of 'int32_t \\\[0]'" }
  29   T (int32_t, 1, 1);          // { dg-warning "array subscript 1 is outside array bounds " }
  30   T (int32_t, 2, 1);          // { dg-warning "array subscript 1 is outside array bounds " }
  31   T (int32_t, 3, 1);          // { dg-warning "array subscript 1 is outside array bounds " }
  32   T (int32_t, 4, 1);          // { dg-warning "array subscript 1 is outside array bounds " }
  33   T (int32_t, 5, 1);          // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[5]" }
  34   T (int32_t, 6, 1);          // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[6]" }
  35   T (int32_t, 7, 1);          // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[7]" }
  36
  37   T (int32_t, 8, 1);
  38 }
  39
  40
  41 void warn_op_array_new ()
  42 {
  43 #undef OP_NEW
  44 #define OP_NEW(n)  operator new[] (n)
  45
  46   T (int32_t, 0, 0);          // { dg-warning "array subscript 0 is outside array bounds of 'int32_t \\\[0]'" }
  47                               // { dg-message "object of size \\d allocated by '\[^\n\r]*operator new\[^\n\r]*'" "note" { target *-*-* } .-1 }
  48   T (int32_t, 1, 0);          // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[1]'" }
  49   T (int32_t, 2, 0);         //  { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[2]'" }
  50   T (int32_t, 3, 0);         // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[3]'" }
  51
  52   T (int32_t, 4, 0);
  53
  54   T (int32_t, 0, 1);          // { dg-warning "array subscript 1 is outside array bounds of 'int32_t \\\[0]'" }
  55   T (int32_t, 1, 1);          // { dg-warning "array subscript 1 is outside array bounds " }
  56   T (int32_t, 2, 1);          // { dg-warning "array subscript 1 is outside array bounds " }
  57   T (int32_t, 3, 1);          // { dg-warning "array subscript 1 is outside array bounds " }
  58   T (int32_t, 4, 1);          // { dg-warning "array subscript 1 is outside array bounds " }
  59   T (int32_t, 5, 1);          // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[5]" }
  60   T (int32_t, 6, 1);          // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[6]" }
  61   T (int32_t, 7, 1);          // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[7]" }
  62
  63   T (int32_t, 8, 1);
  64 }