File: temporaries.cpp

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llvm-toolchain-17 1%3A17.0.6-22
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// REQUIRES: static-analyzer
// RUN: clang-tidy -checks='-*,clang-analyzer-core.NullDereference' %s -- | FileCheck %s

struct NoReturnDtor {
  ~NoReturnDtor() __attribute__((noreturn));
};

extern bool check(const NoReturnDtor &);

// CHECK-NOT: warning
void testNullPointerDereferencePositive() {
  int *value = 0;
  // CHECK: [[@LINE+1]]:10: warning: Dereference of null pointer (loaded from variable 'value') [clang-analyzer-core.NullDereference]
  *value = 1;
}

// CHECK-NOT: warning
void testNullPointerDereference() {
  int *value = 0;
  if (check(NoReturnDtor())) {
    // This unreachable code causes a warning if analysis of temporary
    // destructors is not enabled.
    *value = 1;
  }
}