clang/test/Analysis/string.cpp

   1 // RUN: %clang_analyze_cc1 -analyzer-checker=core,unix -verify %s
   2
   3 // expected-no-diagnostics
   4
   5 // Test functions that are called "memcpy" but aren't the memcpy
   6 // we're looking for. Unfortunately, this test cannot be put into
   7 // a namespace. The out-of-class weird memcpy needs to be recognized
   8 // as a normal C function for the test to make sense.
   9 typedef __typeof(sizeof(int)) size_t;
  10 void *memcpy(void *, const void *, size_t);
  11
  12 struct S {
  13   static S s1, s2;
  14
  15   // A weird overload within the class that accepts a structure reference
  16   // instead of a pointer.
  17   void memcpy(void *, const S &, size_t);
  18   void test_in_class_weird_memcpy() {
  19     memcpy(this, s2, 1); // no-crash
  20   }
  21 };
  22
  23 // A similarly weird overload outside of the class.
  24 void *memcpy(void *, const S &, size_t);
  25
  26 void test_out_of_class_weird_memcpy() {
  27   memcpy(&S::s1, S::s2, 1); // no-crash
  28 }