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// RUN: %check_clang_tidy %s modernize-use-auto %t -- -- \
// RUN: -std=c++11 -I %S/Inputs/modernize-use-auto
struct A {
virtual ~A() {}
};
struct B : public A {};
struct C {};
void f_static_cast() {
long l = 1;
int i1 = static_cast<int>(l);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto i1 = static_cast<int>(l);
const int i2 = static_cast<int>(l);
// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: const auto i2 = static_cast<int>(l);
long long ll = static_cast<long long>(l);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto ll = static_cast<long long>(l);
unsigned long long ull = static_cast<unsigned long long>(l);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto ull = static_cast<unsigned long long>(l);
unsigned int ui = static_cast<unsigned int>(l);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto ui = static_cast<unsigned int>(l);
long double ld = static_cast<long double>(l);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto ld = static_cast<long double>(l);
A *a = new B();
B *b1 = static_cast<B *>(a);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto *b1 = static_cast<B *>(a);
B *const b2 = static_cast<B *>(a);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto *const b2 = static_cast<B *>(a);
const B *b3 = static_cast<const B *>(a);
// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: const auto *b3 = static_cast<const B *>(a);
B &b4 = static_cast<B &>(*a);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto &b4 = static_cast<B &>(*a);
const B &b5 = static_cast<const B &>(*a);
// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: const auto &b5 = static_cast<const B &>(*a);
B &b6 = static_cast<B &>(*a), &b7 = static_cast<B &>(*a);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto &b6 = static_cast<B &>(*a), &b7 = static_cast<B &>(*a);
// Don't warn when non-cast involved
long double cast = static_cast<long double>(l), noncast = 5;
// Don't warn when auto is already being used.
auto i3 = static_cast<int>(l);
auto *b8 = static_cast<B *>(a);
auto &b9 = static_cast<B &>(*a);
}
void f_dynamic_cast() {
A *a = new B();
B *b1 = dynamic_cast<B *>(a);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto *b1 = dynamic_cast<B *>(a);
B &b2 = dynamic_cast<B &>(*a);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto &b2 = dynamic_cast<B &>(*a);
}
void f_reinterpret_cast() {
auto *a = new A();
C *c1 = reinterpret_cast<C *>(a);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto *c1 = reinterpret_cast<C *>(a);
C &c2 = reinterpret_cast<C &>(*a);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto &c2 = reinterpret_cast<C &>(*a);
}
void f_const_cast() {
const A *a1 = new A();
A *a2 = const_cast<A *>(a1);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto *a2 = const_cast<A *>(a1);
A &a3 = const_cast<A &>(*a1);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto &a3 = const_cast<A &>(*a1);
}
void f_cstyle_cast() {
auto *a = new A();
C *c1 = (C *)a;
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto *c1 = (C *)a;
C &c2 = (C &)*a;
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto &c2 = (C &)*a;
}
void f_functional_cast() {
long l = 1;
int i1 = int(l);
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use auto when initializing with a cast to avoid duplicating the type name
// CHECK-FIXES: auto i1 = int(l);
B b;
A a = A(b);
}
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