div-sizeof-ptr.cpp
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// RUN: %clang_cc1 %s -verify -Wsizeof-pointer-div -fsyntax-only
template <typename Ty, int N>
int f(Ty (&Array)[N]) {
return sizeof(Array) / sizeof(Ty); // Should not warn
}
typedef int int32;
void test(int *p, int **q) { // expected-note 5 {{pointer 'p' declared here}}
const int *r; // expected-note {{pointer 'r' declared here}}
int a1 = sizeof(p) / sizeof(*p); // expected-warning {{'sizeof (p)' will return the size of the pointer, not the array itself}}
int a2 = sizeof p / sizeof *p; // expected-warning {{'sizeof p' will return the size of the pointer, not the array itself}}
int a3 = sizeof(p) / sizeof(int); // expected-warning {{'sizeof (p)' will return the size of the pointer, not the array itself}}
int a4 = sizeof(p) / sizeof(p[0]); // expected-warning {{'sizeof (p)' will return the size of the pointer, not the array itself}}
int a5 = sizeof(p) / sizeof(int32); // expected-warning {{'sizeof (p)' will return the size of the pointer, not the array itself}}
int a6 = sizeof(r) / sizeof(int); // expected-warning {{'sizeof (r)' will return the size of the pointer, not the array itself}}
int32 *d; // expected-note 2 {{pointer 'd' declared here}}
int a7 = sizeof(d) / sizeof(int32); // expected-warning {{'sizeof (d)' will return the size of the pointer, not the array itself}}
int a8 = sizeof(d) / sizeof(int); // expected-warning {{'sizeof (d)' will return the size of the pointer, not the array itself}}
int a9 = sizeof(*q) / sizeof(**q); // expected-warning {{'sizeof (*q)' will return the size of the pointer, not the array itself}}
// Should not warn
int b1 = sizeof(int *) / sizeof(int);
int b2 = sizeof(p) / sizeof(p);
int b3 = sizeof(*q) / sizeof(q);
int b4 = sizeof(p) / sizeof(char);
int arr[10];
int c1 = sizeof(arr) / sizeof(*arr);
int c2 = sizeof(arr) / sizeof(arr[0]);
int c3 = sizeof(arr) / sizeof(int);
int arr2[10][12];
int d1 = sizeof(arr2) / sizeof(*arr2);
}