compiler-rt/test/asan/TestCases/use-after-scope-conversion.cpp

   1 // RUN: %clangxx_asan -O0 %s -o %t
   2
   3 // RUN: not %run %t 'A' 2>&1 | FileCheck %s
   4 // RUN: not %run %t 'B' 2>&1 | FileCheck %s
   5
   6 // Missing lifetime markers in test_a
   7 // https://bugs.llvm.org/show_bug.cgi?id=34353
   8 // XFAIL: *
   9
  10 struct B {
  11   B() : p('B') {}
  12   char p;
  13 };
  14
  15 struct C {
  16   const char *p;
  17   explicit C(const char *c) : p(c) {}
  18   explicit C(const B &b) : p(&b.p) {}
  19 };
  20
  21 struct A {
  22   char p;
  23   A() : p('C') {}
  24   const operator C() const { return C(&p); }
  25 };
  26
  27 volatile char r;
  28 void test_a() {
  29   C s = A();
  30   r = *s.p;
  31 }
  32
  33 void test_b() {
  34   C s = B();
  35   r = *s.p;
  36 }
  37
  38 int main(int argc, char **argv) {
  39   switch (argv[1][0]) {
  40   case 'A':
  41     test_a();
  42     return 0;
  43   case 'B':
  44     test_b();
  45     return 0;
  46   }
  47   return 1;
  48 }
  49
  50 // CHECK: ERROR: AddressSanitizer: stack-use-after-scope