projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 1be51a3a MS |
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 the nothrow form | |
| 3 | of the new expression are diagnosed. | |
| 4 | { dg-do compile } | |
| 5 | { dg-options "-O2 -Wall -Warray-bounds -ftrack-macro-expansion=0" } */ | |
| 6 | ||
| 7 | #include <new> | |
| 8 | ||
| 9 | typedef __INT32_TYPE__ int32_t; | |
| 10 | ||
| 11 | void sink (void*); | |
| 12 | ||
| 13 | template <int N> struct S { char a[N]; }; | |
| 14 | ||
| 15 | void sink (void*); | |
| 16 | ||
| 17 | #define NEW(n) new (std::nothrow) S<n> | |
| 18 | #define T(T, n, i) do { \ | |
| 19 | T *p = (T*)NEW (n); \ | |
| 20 | p[i] = 0; \ | |
| 21 | sink (p); \ | |
| 22 | } while (0) | |
| 23 | ||
| 24 | void warn_nothrow_new () | |
| 25 | { | |
| 26 | T (int32_t, 0, 0); // { dg-warning "array subscript 0 is outside array bounds of 'int32_t \\\[0]'" } | |
| a1108556 | 27 | // { dg-message "object of size \\d allocated by '\[^\n\r]*operator new\[^\n\r]*'" "note" { target *-*-* } .-1 } |
| 8e99b5ba HPN |
28 | T (int32_t, 1, 0); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[1]'" } |
| 29 | T (int32_t, 2, 0); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[2]'" } | |
| 30 | T (int32_t, 3, 0); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[3]'" } | |
| 1be51a3a MS |
31 | |
| 32 | T (int32_t, 4, 0); | |
| 33 | ||
| 34 | T (int32_t, 0, 1); // { dg-warning "array subscript 1 is outside array bounds of 'int32_t \\\[0]'" } | |
| 35 | T (int32_t, 1, 1); // { dg-warning "array subscript 1 is outside array bounds " } | |
| 36 | T (int32_t, 2, 1); // { dg-warning "array subscript 1 is outside array bounds " } | |
| 37 | T (int32_t, 3, 1); // { dg-warning "array subscript 1 is outside array bounds " } | |
| 38 | T (int32_t, 4, 1); // { dg-warning "array subscript 1 is outside array bounds " } | |
| 8e99b5ba HPN |
39 | T (int32_t, 5, 1); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[5]" } |
| 40 | T (int32_t, 6, 1); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[6]" } | |
| 41 | T (int32_t, 7, 1); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[7]" } | |
| 1be51a3a MS |
42 | |
| 43 | T (int32_t, 8, 1); | |
| 44 | } | |
| 45 | ||
| 46 | ||
| 47 | void warn_nothrow_array_new () | |
| 48 | { | |
| 49 | #undef NEW | |
| 50 | #define NEW(n) new (std::nothrow) char [n] | |
| 51 | ||
| 52 | T (int32_t, 0, 0); // { dg-warning "array subscript 0 is outside array bounds of 'int32_t \\\[0]'" } | |
| a1108556 | 53 | // { dg-message "object of size \\d allocated by '\[^\n\r]*operator new\[^\n\r]*'" "note" { target *-*-* } .-1 } |
| 8e99b5ba HPN |
54 | T (int32_t, 1, 0); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[1]'" } |
| 55 | T (int32_t, 2, 0); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[2]'" } | |
| 56 | T (int32_t, 3, 0); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[0]' is partly outside array bounds of 'unsigned char \\\[3]'" } | |
| 1be51a3a MS |
57 | |
| 58 | T (int32_t, 4, 0); | |
| 59 | ||
| 60 | T (int32_t, 0, 1); // { dg-warning "array subscript 1 is outside array bounds of 'int32_t \\\[0]'" } | |
| 61 | T (int32_t, 1, 1); // { dg-warning "array subscript 1 is outside array bounds " } | |
| 62 | T (int32_t, 2, 1); // { dg-warning "array subscript 1 is outside array bounds " } | |
| 63 | T (int32_t, 3, 1); // { dg-warning "array subscript 1 is outside array bounds " } | |
| 64 | T (int32_t, 4, 1); // { dg-warning "array subscript 1 is outside array bounds " } | |
| 8e99b5ba HPN |
65 | T (int32_t, 5, 1); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[5]" } |
| 66 | T (int32_t, 6, 1); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[6]" } | |
| 67 | T (int32_t, 7, 1); // { dg-warning "array subscript 'int32_t {aka (long )?int}\\\[1]' is partly outside array bounds of 'unsigned char \\\[7]" } | |
| 1be51a3a MS |
68 | |
| 69 | T (int32_t, 8, 1); | |
| 70 | } |