54 lines
2.3 KiB
C++
54 lines
2.3 KiB
C++
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// RUN: %clang_cc1 %s -verify -Wsizeof-array-div -fsyntax-only -triple=x86_64-linux-gnu
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// RUN: %clang_cc1 %s -verify -fsyntax-only -triple=x86_64-linux-gnu
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template <typename Ty, int N>
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int f(Ty (&Array)[N]) {
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return sizeof(Array) / sizeof(Ty); // Should not warn
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}
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typedef int int32;
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void test(void) {
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int arr[12]; // expected-note 2 {{array 'arr' declared here}}
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unsigned long long arr2[4];
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int *p = &arr[0];
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int a1 = sizeof(arr) / sizeof(*arr);
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int a2 = sizeof arr / sizeof p; // expected-warning {{expression does not compute the number of elements in this array; element type is 'int', not 'int *'}}
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// expected-note@-1 {{place parentheses around the 'sizeof p' expression to silence this warning}}
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int a4 = sizeof arr2 / sizeof p;
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int a5 = sizeof(arr) / sizeof(short); // expected-warning {{expression does not compute the number of elements in this array; element type is 'int', not 'short'}}
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// expected-note@-1 {{place parentheses around the 'sizeof(short)' expression to silence this warning}}
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int a6 = sizeof(arr) / sizeof(int32);
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int a7 = sizeof(arr) / sizeof(int);
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int a9 = sizeof(arr) / sizeof(unsigned int);
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const char arr3[2] = "A";
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int a10 = sizeof(arr3) / sizeof(char);
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int a11 = sizeof(arr2) / (sizeof(unsigned));
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int a12 = sizeof(arr) / (sizeof(short));
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int a13 = sizeof(arr3) / sizeof(p);
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int a14 = sizeof(arr3) / sizeof(int);
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int arr4[10][12];
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int b1 = sizeof(arr4) / sizeof(arr2[12]);
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int b2 = sizeof(arr4) / sizeof(int *);
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int b3 = sizeof(arr4) / sizeof(short *);
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int arr5[][5] = {
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{1, 2, 3, 4, 5},
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{6, 7, 8, 9, 0},
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};
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int c1 = sizeof(arr5) / sizeof(*arr5);
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int c2 = sizeof(arr5) / sizeof(**arr5);
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int c3 = sizeof(arr5) / sizeof(int);
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float m[4][4];
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int d1 = sizeof(m) / sizeof(**m);
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int array[10];
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int narray = sizeof(array) / sizeof(int &);
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int narray2 = sizeof(array) / sizeof(decltype(array[0]));
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int *arrptrs[10]; // expected-note {{array 'arrptrs' declared here}}
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int len = sizeof(arrptrs) / sizeof(decltype(*arrptrs[0])); // expected-warning {{expression does not compute the number of elements in this array; element type is 'int *', not 'int'}}
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// expected-note@-1 {{place parentheses around the 'sizeof(decltype(*arrptrs[0]))' expression to silence this warning}}
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}
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