40 lines · cpp
1// RUN: %clang_cc1 %s -verify -Wsizeof-pointer-div -fsyntax-only2 3template <typename Ty, int N>4int f(Ty (&Array)[N]) {5 return sizeof(Array) / sizeof(Ty); // Should not warn6}7 8typedef int int32;9 10void test(int *p, int **q) { // expected-note 6 {{pointer 'p' declared here}}11 const int *r; // expected-note {{pointer 'r' declared here}}12 int a1 = sizeof(p) / sizeof(*p); // expected-warning {{'sizeof (p)' will return the size of the pointer, not the array itself}}13 int a2 = sizeof p / sizeof *p; // expected-warning {{'sizeof p' will return the size of the pointer, not the array itself}}14 int a3 = sizeof(p) / sizeof(int); // expected-warning {{'sizeof (p)' will return the size of the pointer, not the array itself}}15 int a4 = sizeof(p) / sizeof(p[0]); // expected-warning {{'sizeof (p)' will return the size of the pointer, not the array itself}}16 int a5 = sizeof(p) / sizeof(int32); // expected-warning {{'sizeof (p)' will return the size of the pointer, not the array itself}}17 int a6 = sizeof(r) / sizeof(int); // expected-warning {{'sizeof (r)' will return the size of the pointer, not the array itself}}18 19 int32 *d; // expected-note 2 {{pointer 'd' declared here}}20 int a7 = sizeof(d) / sizeof(int32); // expected-warning {{'sizeof (d)' will return the size of the pointer, not the array itself}}21 int a8 = sizeof(d) / sizeof(int); // expected-warning {{'sizeof (d)' will return the size of the pointer, not the array itself}}22 23 int a9 = sizeof(*q) / sizeof(**q); // expected-warning {{'sizeof (*q)' will return the size of the pointer, not the array itself}}24 int a10 = sizeof(p) / sizeof(decltype(*p)); // expected-warning {{'sizeof (p)' will return the size of the pointer, not the array itself}}25 26 // Should not warn27 int b1 = sizeof(int *) / sizeof(int);28 int b2 = sizeof(p) / sizeof(p);29 int b3 = sizeof(*q) / sizeof(q);30 int b4 = sizeof(p) / sizeof(char);31 32 int arr[10];33 int c1 = sizeof(arr) / sizeof(*arr);34 int c2 = sizeof(arr) / sizeof(arr[0]);35 int c3 = sizeof(arr) / sizeof(int);36 37 int arr2[10][12];38 int d1 = sizeof(arr2) / sizeof(*arr2);39}40