forked from OSchip/llvm-project
47 lines
2.9 KiB
C++
47 lines
2.9 KiB
C++
// 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 arr4[10][12]; // expected-note 3 {{array 'arr4' declared here}}
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int b1 = sizeof(arr4) / sizeof(arr2[12]); // expected-warning {{expression does not compute the number of elements in this array; element type is 'int [12]', not 'unsigned long long'}}
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// expected-note@-1 {{place parentheses around the 'sizeof (arr2[12])' expression to silence this warning}}
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int b2 = sizeof(arr4) / sizeof(int *); // expected-warning {{expression does not compute the number of elements in this array; element type is 'int [12]', not 'int *'}}
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// expected-note@-1 {{place parentheses around the 'sizeof(int *)' expression to silence this warning}}
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int b3 = sizeof(arr4) / sizeof(short *); // expected-warning {{expression does not compute the number of elements in this array; element type is 'int [12]', 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 arr5[][5] = { // expected-note 2 {{array 'arr5' declared here}}
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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); // expected-warning {{expression does not compute the number of elements in this array; element type is 'int [5]', not 'int'}}
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// expected-note@-1 {{place parentheses around the 'sizeof (**arr5)' expression to silence this warning}}
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int c3 = sizeof(arr5) / sizeof(int); // expected-warning {{expression does not compute the number of elements in this array; element type is 'int [5]', not 'int'}}
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// expected-note@-1 {{place parentheses around the 'sizeof(int)' expression to silence this warning}}
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}
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