diff options
Diffstat (limited to 'clang/test/Sema/div-sizeof-array.cpp')
| -rw-r--r-- | clang/test/Sema/div-sizeof-array.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/clang/test/Sema/div-sizeof-array.cpp b/clang/test/Sema/div-sizeof-array.cpp new file mode 100644 index 00000000000..1c34666d05d --- /dev/null +++ b/clang/test/Sema/div-sizeof-array.cpp @@ -0,0 +1,28 @@ +// RUN: %clang_cc1 %s -verify -Wsizeof-array-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(void) { + int arr[12]; // expected-note 2 {{array 'arr' declared here}} + unsigned long long arr2[4]; + int *p = &arr[0]; + int a1 = sizeof(arr) / sizeof(*arr); + 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 *'}} + int a4 = sizeof arr2 / sizeof p; + 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'}} + int a6 = sizeof(arr) / sizeof(int32); + int a7 = sizeof(arr) / sizeof(int); + int a9 = sizeof(arr) / sizeof(unsigned int); + const char arr3[2] = "A"; + int a10 = sizeof(arr3) / sizeof(char); + + int arr4[10][12]; // expected-note 3 {{array 'arr4' declared here}} + 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'}} + 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 *'}} + 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 *'}} +} |
