llvm-project/clang-tools-extra/test/clang-tidy/temporaries.cpp

26 lines
702 B
C++

// 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;
}
}