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