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// RUN: %clang_cc1 -analyze -analyzer-checker=alpha.unix.BlockInCriticalSection -std=c++11 -verify %s
void sleep(int x) {}
namespace std {
struct mutex {
void lock() {}
void unlock() {}
};
}
void testBlockInCriticalSection() {
std::mutex m;
m.lock();
sleep(3); // expected-warning {{A blocking function %s is called inside a critical section}}
m.unlock();
}
void testBlockInCriticalSectionWithNestedMutexes() {
std::mutex m, n, k;
m.lock();
n.lock();
k.lock();
sleep(3); // expected-warning {{A blocking function %s is called inside a critical section}}
k.unlock();
sleep(5); // expected-warning {{A blocking function %s is called inside a critical section}}
n.unlock();
sleep(3); // expected-warning {{A blocking function %s is called inside a critical section}}
m.unlock();
sleep(3); // no-warning
}
void f() {
sleep(1000); // expected-warning {{A blocking function %s is called inside a critical section}}
}
void testBlockInCriticalSectionInterProcedural() {
std::mutex m;
m.lock();
f();
m.unlock();
}
void testBlockInCriticalSectionUnexpectedUnlock() {
std::mutex m;
m.unlock();
sleep(1); // no-warning
m.lock();
sleep(1); // expected-warning {{A blocking function %s is called inside a critical section}}
}
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