1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=core,debug.ExprInspection %s -std=c++11 -verify 2 3 void clang_analyzer_eval(bool); 4 5 void testAddressof(int x) { 6 clang_analyzer_eval(&x == __builtin_addressof(x)); // expected-warning{{TRUE}} 7 } 8 9 void testSize() { 10 struct { 11 int x; 12 int y; 13 char z; 14 } object; 15 clang_analyzer_eval(__builtin_object_size(&object.y, 0) == sizeof(object) - sizeof(int)); // expected-warning{{TRUE}} 16 17 // Clang can't actually evaluate these builtin "calls", but importantly they don't actually evaluate the argument expression either. 18 int i = 0; 19 char buf[10]; 20 clang_analyzer_eval(__builtin_object_size(&buf[i++], 0) == sizeof(buf)); // expected-warning{{FALSE}} 21 clang_analyzer_eval(__builtin_object_size(&buf[++i], 0) == sizeof(buf) - 1); // expected-warning{{FALSE}} 22 23 clang_analyzer_eval(i == 0); // expected-warning{{TRUE}} 24 } 25 26 void test_assume_aligned_1(char *p) { 27 char *q; 28 29 q = (char*) __builtin_assume_aligned(p, 16); 30 clang_analyzer_eval(p == q); // expected-warning{{TRUE}} 31 } 32 33 void test_assume_aligned_2(char *p) { 34 char *q; 35 36 q = (char*) __builtin_assume_aligned(p, 16, 8); 37 clang_analyzer_eval(p == q); // expected-warning{{TRUE}} 38 } 39 40 void test_assume_aligned_3(char *p) { 41 void *q; 42 43 q = __builtin_assume_aligned(p, 16, 8); 44 clang_analyzer_eval(p == q); // expected-warning{{TRUE}} 45 } 46 47 void test_assume_aligned_4(char *p) { 48 char *q; 49 50 q = (char*) __builtin_assume_aligned(p + 1, 16); 51 clang_analyzer_eval(p == q); // expected-warning{{FALSE}} 52 } 53
