llvm-project/clang/test/Analysis/reinterpret-cast.cpp

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C++

// RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -analyzer-ipa=inlining -verify %s
void clang_analyzer_eval(bool);
typedef struct Opaque *Data;
struct IntWrapper {
int x;
};
struct Child : public IntWrapper {
void set() { x = 42; }
};
void test(Data data) {
Child *wrapper = reinterpret_cast<Child*>(data);
// Don't crash when upcasting here.
// We don't actually know if 'data' is a Child.
wrapper->set();
clang_analyzer_eval(wrapper->x == 42); // expected-warning{{TRUE}}
}