1*67e74705SXin Li // RUN: %clang_cc1 -analyze -analyzer-checker=unix.MallocSizeof -verify %s 2*67e74705SXin Li 3*67e74705SXin Li #include <stddef.h> 4*67e74705SXin Li 5*67e74705SXin Li void *malloc(size_t size); 6*67e74705SXin Li void *calloc(size_t nmemb, size_t size); 7*67e74705SXin Li void *realloc(void *ptr, size_t size); 8*67e74705SXin Li void free(void *ptr); 9*67e74705SXin Li 10*67e74705SXin Li struct A {}; 11*67e74705SXin Li struct B {}; 12*67e74705SXin Li foo(unsigned int unsignedInt,unsigned int readSize)13*67e74705SXin Livoid foo(unsigned int unsignedInt, unsigned int readSize) { 14*67e74705SXin Li // Sanity check the checker is working as expected. 15*67e74705SXin Li A* a = static_cast<A*>(malloc(sizeof(int))); // expected-warning {{Result of 'malloc' is converted to a pointer of type 'struct A', which is incompatible with sizeof operand type 'int'}} 16*67e74705SXin Li free(a); 17*67e74705SXin Li } 18*67e74705SXin Li bar()19*67e74705SXin Livoid bar() { 20*67e74705SXin Li A *x = static_cast<A*>(calloc(10, sizeof(void*))); // expected-warning {{Result of 'calloc' is converted to a pointer of type 'struct A', which is incompatible with sizeof operand type 'void *'}} 21*67e74705SXin Li // sizeof(void*) is compatible with any pointer. 22*67e74705SXin Li A **y = static_cast<A**>(calloc(10, sizeof(void*))); // no-warning 23*67e74705SXin Li free(x); 24*67e74705SXin Li free(y); 25*67e74705SXin Li } 26*67e74705SXin Li 27