clang/test/SemaCXX/uninit-variables-conditional.cpp

   1 // RUN: %clang_cc1 -Wconditional-uninitialized -fsyntax-only %s -verify
   2
   3 class Foo {
   4 public:
   5   Foo();
   6   ~Foo();
   7   operator bool();
   8 };
   9
  10 int bar();
  11 int baz();
  12 int init(double *);
  13
  14 // This case flags a false positive under -Wconditional-uninitialized because
  15 // the destructor in Foo fouls about the minor bit of path-sensitivity in
  16 // -Wuninitialized.
  17 double test() {
  18   double x; // expected-note{{initialize the variable 'x' to silence this warning}}
  19   if (bar() || baz() || Foo() || init(&x))
  20     return 1.0;
  21
  22   return x; // expected-warning {{variable 'x' may be uninitialized when used here}}
  23 }