clang/test/Analysis/cxx-crashes.cpp

   1 // RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.Malloc,debug.ExprInspection -verify %s
   2 // REQUIRES: LP64
   3
   4 void clang_analyzer_eval(bool);
   5
   6 int f1(char *dst) {
   7   char *p = dst + 4;
   8   char *q = dst + 3;
   9   return !(q >= p);
  10 }
  11
  12 long f2(char *c) {
  13   return long(c) & 1;
  14 }
  15
  16 bool f3() {
  17   return !false;
  18 }
  19
  20 void *f4(int* w) {
  21   return reinterpret_cast<void*&>(w);
  22 }
  23
  24 namespace {
  25
  26 struct A { };
  27 struct B {
  28   operator A() { return A(); }
  29 };
  30
  31 A f(char *dst) {
  32   B b;
  33   return b;
  34 }
  35
  36 }
  37
  38 namespace {
  39
  40 struct S {
  41     void *p;
  42 };
  43
  44 void *f(S* w) {
  45     return &reinterpret_cast<void*&>(*w);
  46 }
  47
  48 }
  49
  50 namespace {
  51
  52 struct C {
  53   void *p;
  54   static void f();
  55 };
  56
  57 void C::f() { }
  58
  59 }
  60
  61
  62 void vla(int n) {
  63   int nums[n];
  64   nums[0] = 1;
  65   clang_analyzer_eval(nums[0] == 1); // expected-warning{{TRUE}}
  66
  67   // This used to fail with MallocChecker on, and /only/ in C++ mode.
  68   // This struct is POD, though, so it should be fine to put it in a VLA.
  69   struct { int x; } structs[n];
  70   structs[0].x = 1;
  71   clang_analyzer_eval(structs[0].x == 1); // expected-warning{{TRUE}}
  72 }
  73
  74 void useIntArray(int []);
  75 void testIntArrayLiteral() {
  76   useIntArray((int []){ 1, 2, 3 });
  77 }
  78