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-rw-r--r--test/SemaCXX/diagnose_if.cpp313
1 files changed, 261 insertions, 52 deletions
diff --git a/test/SemaCXX/diagnose_if.cpp b/test/SemaCXX/diagnose_if.cpp
index f97b79d03529..02b3620e7692 100644
--- a/test/SemaCXX/diagnose_if.cpp
+++ b/test/SemaCXX/diagnose_if.cpp
@@ -2,6 +2,8 @@
#define _diagnose_if(...) __attribute__((diagnose_if(__VA_ARGS__)))
+using size_t = decltype(sizeof(int));
+
namespace type_dependent {
template <typename T>
void neverok() _diagnose_if(!T(), "oh no", "error") {} // expected-note 4{{from 'diagnose_if'}}
@@ -51,14 +53,14 @@ void runAll() {
}
template <typename T>
-void errorIf(T a) _diagnose_if(T() != a, "oh no", "error") {} // expected-note {{candidate disabled: oh no}}
+void errorIf(T a) _diagnose_if(T() != a, "oh no", "error") {} // expected-note{{from 'diagnose_if'}}
template <typename T>
-void warnIf(T a) _diagnose_if(T() != a, "oh no", "warning") {} // expected-note {{from 'diagnose_if'}}
+void warnIf(T a) _diagnose_if(T() != a, "oh no", "warning") {} // expected-note{{from 'diagnose_if'}}
void runIf() {
errorIf(0);
- errorIf(1); // expected-error{{call to unavailable function}}
+ errorIf(1); // expected-error{{oh no}}
warnIf(0);
warnIf(1); // expected-warning{{oh no}}
@@ -114,14 +116,14 @@ void runAll() {
}
template <int N>
-void errorIf(int a) _diagnose_if(N != a, "oh no", "error") {} // expected-note {{candidate disabled: oh no}}
+void errorIf(int a) _diagnose_if(N != a, "oh no", "error") {} // expected-note{{from 'diagnose_if'}}
template <int N>
-void warnIf(int a) _diagnose_if(N != a, "oh no", "warning") {} // expected-note {{from 'diagnose_if'}}
+void warnIf(int a) _diagnose_if(N != a, "oh no", "warning") {} // expected-note{{from 'diagnose_if'}}
void runIf() {
errorIf<0>(0);
- errorIf<0>(1); // expected-error{{call to unavailable function}}
+ errorIf<0>(1); // expected-error{{oh no}}
warnIf<0>(0);
warnIf<0>(1); // expected-warning{{oh no}}
@@ -135,8 +137,8 @@ void foo(short);
void bar(int);
void bar(short) _diagnose_if(1, "oh no", "error");
-void fooArg(int a) _diagnose_if(a, "oh no", "error"); // expected-note{{candidate disabled: oh no}}
-void fooArg(short); // expected-note{{candidate function}}
+void fooArg(int a) _diagnose_if(a, "oh no", "error"); // expected-note{{from 'diagnose_if'}}
+void fooArg(short);
void barArg(int);
void barArg(short a) _diagnose_if(a, "oh no", "error");
@@ -145,7 +147,7 @@ void runAll() {
foo(1); // expected-error{{oh no}}
bar(1);
- fooArg(1); // expected-error{{call to unavailable function}}
+ fooArg(1); // expected-error{{oh no}}
barArg(1);
auto p = foo; // expected-error{{incompatible initializer of type '<overloaded function type>'}}
@@ -188,11 +190,11 @@ struct Errors {
void foo(int i) _diagnose_if(i, "bad i", "error"); // expected-note{{from 'diagnose_if'}}
void bar(int i) _diagnose_if(i != T(), "bad i", "error"); // expected-note{{from 'diagnose_if'}}
- void fooOvl(int i) _diagnose_if(i, "int bad i", "error"); // expected-note 2{{int bad i}}
- void fooOvl(short i) _diagnose_if(i, "short bad i", "error"); // expected-note 2{{short bad i}}
+ void fooOvl(int i) _diagnose_if(i, "int bad i", "error"); // expected-note{{from 'diagnose_if'}}
+ void fooOvl(short i) _diagnose_if(i, "short bad i", "error"); // expected-note{{from 'diagnose_if'}}
- void barOvl(int i) _diagnose_if(i != T(), "int bad i", "error"); // expected-note 2{{int bad i}}
- void barOvl(short i) _diagnose_if(i != T(), "short bad i", "error"); // expected-note 2{{short bad i}}
+ void barOvl(int i) _diagnose_if(i != T(), "int bad i", "error"); // expected-note{{from 'diagnose_if'}}
+ void barOvl(short i) _diagnose_if(i != T(), "short bad i", "error"); // expected-note{{from 'diagnose_if'}}
};
void runErrors() {
@@ -203,14 +205,14 @@ void runErrors() {
Errors<int>().bar(1); // expected-error{{bad i}}
Errors<int>().fooOvl(0);
- Errors<int>().fooOvl(1); // expected-error{{call to unavailable}}
+ Errors<int>().fooOvl(1); // expected-error{{int bad i}}
Errors<int>().fooOvl(short(0));
- Errors<int>().fooOvl(short(1)); // expected-error{{call to unavailable}}
+ Errors<int>().fooOvl(short(1)); // expected-error{{short bad i}}
Errors<int>().barOvl(0);
- Errors<int>().barOvl(1); // expected-error{{call to unavailable}}
+ Errors<int>().barOvl(1); // expected-error{{int bad i}}
Errors<int>().barOvl(short(0));
- Errors<int>().barOvl(short(1)); // expected-error{{call to unavailable}}
+ Errors<int>().barOvl(short(1)); // expected-error{{short bad i}}
}
template <typename T>
@@ -275,8 +277,8 @@ namespace late_constexpr {
constexpr int foo();
constexpr int foo(int a);
-void bar() _diagnose_if(foo(), "bad foo", "error"); // expected-note{{from 'diagnose_if'}} expected-note{{not viable: requires 0 arguments}}
-void bar(int a) _diagnose_if(foo(a), "bad foo", "error"); // expected-note{{bad foo}}
+void bar() _diagnose_if(foo(), "bad foo", "error"); // expected-note{{from 'diagnose_if'}}
+void bar(int a) _diagnose_if(foo(a), "bad foo", "error"); // expected-note{{from 'diagnose_if'}}
void early() {
bar();
@@ -290,7 +292,7 @@ constexpr int foo(int a) { return a; }
void late() {
bar(); // expected-error{{bad foo}}
bar(0);
- bar(1); // expected-error{{call to unavailable function}}
+ bar(1); // expected-error{{bad foo}}
}
}
@@ -301,11 +303,11 @@ struct Foo {
constexpr bool isFooable() const { return i; }
void go() const _diagnose_if(isFooable(), "oh no", "error") {} // expected-note{{from 'diagnose_if'}}
- operator int() const _diagnose_if(isFooable(), "oh no", "error") { return 1; } // expected-note{{oh no}}
+ operator int() const _diagnose_if(isFooable(), "oh no", "error") { return 1; } // expected-note{{from 'diagnose_if'}}
- void go2() const _diagnose_if(isFooable(), "oh no", "error") // expected-note{{oh no}}
+ void go2() const _diagnose_if(isFooable(), "oh no", "error") // expected-note{{from 'diagnose_if'}}
__attribute__((enable_if(true, ""))) {}
- void go2() const _diagnose_if(isFooable(), "oh no", "error") {} // expected-note{{oh no}}
+ void go2() const _diagnose_if(isFooable(), "oh no", "error") {}
constexpr int go3() const _diagnose_if(isFooable(), "oh no", "error")
__attribute__((enable_if(true, ""))) {
@@ -326,20 +328,20 @@ struct Foo {
}
};
-void go(const Foo &f) _diagnose_if(f.isFooable(), "oh no", "error") {} // expected-note{{oh no}}
+void go(const Foo &f) _diagnose_if(f.isFooable(), "oh no", "error") {} // expected-note{{from 'diagnose_if'}}
void run() {
Foo(0).go();
Foo(1).go(); // expected-error{{oh no}}
(void)int(Foo(0));
- (void)int(Foo(1)); // expected-error{{uses deleted function}}
+ (void)int(Foo(1)); // expected-error{{oh no}}
Foo(0).go2();
- Foo(1).go2(); // expected-error{{call to unavailable member function}}
+ Foo(1).go2(); // expected-error{{oh no}}
go(Foo(0));
- go(Foo(1)); // expected-error{{call to unavailable function}}
+ go(Foo(1)); // expected-error{{oh no}}
}
}
@@ -349,17 +351,17 @@ struct Foo {
constexpr Foo(int i): i(i) {}
constexpr bool bad() const { return i; }
- template <typename T> T getVal() _diagnose_if(bad(), "oh no", "error") { // expected-note{{oh no}}
+ template <typename T> T getVal() _diagnose_if(bad(), "oh no", "error") { // expected-note{{from 'diagnose_if'}}
return T();
}
template <typename T>
- constexpr T getVal2() const _diagnose_if(bad(), "oh no", "error") { // expected-note{{oh no}}
+ constexpr T getVal2() const _diagnose_if(bad(), "oh no", "error") { // expected-note{{from 'diagnose_if'}}
return T();
}
template <typename T>
- constexpr operator T() const _diagnose_if(bad(), "oh no", "error") { // expected-note{{oh no}}
+ constexpr operator T() const _diagnose_if(bad(), "oh no", "error") { // expected-note{{from 'diagnose_if'}}
return T();
}
@@ -369,13 +371,13 @@ struct Foo {
void run() {
Foo(0).getVal<int>();
- Foo(1).getVal<int>(); // expected-error{{call to unavailable member function}}
+ Foo(1).getVal<int>(); // expected-error{{oh no}}
Foo(0).getVal2<int>();
- Foo(1).getVal2<int>(); // expected-error{{call to unavailable member function}}
+ Foo(1).getVal2<int>(); // expected-error{{oh no}}
(void)int(Foo(0));
- (void)int(Foo(1)); // expected-error{{uses deleted function}}
+ (void)int(Foo(1)); // expected-error{{oh no}}
}
}
@@ -385,18 +387,18 @@ struct Foo {
int i;
constexpr Foo(int i): i(i) {}
constexpr bool bad() const { return i; }
- const Bar *operator->() const _diagnose_if(bad(), "oh no", "error") { // expected-note{{oh no}}
+ const Bar *operator->() const _diagnose_if(bad(), "oh no", "error") { // expected-note{{from 'diagnose_if'}}
return nullptr;
}
- void operator()() const _diagnose_if(bad(), "oh no", "error") {} // expected-note{{oh no}}
+ void operator()() const _diagnose_if(bad(), "oh no", "error") {} // expected-note{{from 'diagnose_if'}}
};
struct ParenOverload {
int i;
constexpr ParenOverload(int i): i(i) {}
constexpr bool bad() const { return i; }
- void operator()(double) const _diagnose_if(bad(), "oh no", "error") {} // expected-note 2{{oh no}}
- void operator()(int) const _diagnose_if(bad(), "oh no", "error") {} // expected-note 2{{oh no}}
+ void operator()(double) const _diagnose_if(bad(), "oh no", "error") {} // expected-note{{from 'diagnose_if'}}
+ void operator()(int) const _diagnose_if(bad(), "oh no", "error") {} // expected-note{{from 'diagnose_if'}}
};
struct ParenTemplate {
@@ -404,33 +406,70 @@ struct ParenTemplate {
constexpr ParenTemplate(int i): i(i) {}
constexpr bool bad() const { return i; }
template <typename T>
- void operator()(T) const _diagnose_if(bad(), "oh no", "error") {} // expected-note 2{{oh no}}
+ void operator()(T) const _diagnose_if(bad(), "oh no", "error") {} // expected-note 2{{from 'diagnose_if'}}
};
void run() {
(void)Foo(0)->j;
- (void)Foo(1)->j; // expected-error{{selected unavailable operator '->'}}
+ (void)Foo(1)->j; // expected-error{{oh no}}
Foo(0)();
- Foo(1)(); // expected-error{{unavailable function call operator}}
+ Foo(1)(); // expected-error{{oh no}}
ParenOverload(0)(1);
ParenOverload(0)(1.);
- ParenOverload(1)(1); // expected-error{{unavailable function call operator}}
- ParenOverload(1)(1.); // expected-error{{unavailable function call operator}}
+ ParenOverload(1)(1); // expected-error{{oh no}}
+ ParenOverload(1)(1.); // expected-error{{oh no}}
ParenTemplate(0)(1);
ParenTemplate(0)(1.);
- ParenTemplate(1)(1); // expected-error{{unavailable function call operator}}
- ParenTemplate(1)(1.); // expected-error{{unavailable function call operator}}
+ ParenTemplate(1)(1); // expected-error{{oh no}}
+ ParenTemplate(1)(1.); // expected-error{{oh no}}
}
void runLambda() {
- auto L1 = [](int i) _diagnose_if(i, "oh no", "error") {}; // expected-note{{oh no}} expected-note{{conversion candidate}}
+ auto L1 = [](int i) _diagnose_if(i, "oh no", "error") {}; // expected-note{{from 'diagnose_if'}}
L1(0);
- L1(1); // expected-error{{call to unavailable function call}}
+ L1(1); // expected-error{{oh no}}
+}
+
+struct Brackets {
+ int i;
+ constexpr Brackets(int i): i(i) {}
+ void operator[](int) _diagnose_if(i == 1, "oh no", "warning") // expected-note{{from 'diagnose_if'}}
+ _diagnose_if(i == 2, "oh no", "error"); // expected-note{{from 'diagnose_if'}}
+};
+
+void runBrackets(int i) {
+ Brackets{0}[i];
+ Brackets{1}[i]; // expected-warning{{oh no}}
+ Brackets{2}[i]; // expected-error{{oh no}}
+}
+
+struct Unary {
+ int i;
+ constexpr Unary(int i): i(i) {}
+ void operator+() _diagnose_if(i == 1, "oh no", "warning") // expected-note{{from 'diagnose_if'}}
+ _diagnose_if(i == 2, "oh no", "error"); // expected-note{{from 'diagnose_if'}}
+};
+
+void runUnary() {
+ +Unary{0};
+ +Unary{1}; // expected-warning{{oh no}}
+ +Unary{2}; // expected-error{{oh no}}
+}
+
+struct PostInc {
+ void operator++(int i) _diagnose_if(i == 1, "oh no", "warning") // expected-note{{from 'diagnose_if'}}
+ _diagnose_if(i == 2, "oh no", "error"); // expected-note{{from 'diagnose_if'}}
+};
+
+void runPostInc() {
+ PostInc{}++;
+ PostInc{}.operator++(1); // expected-warning{{oh no}}
+ PostInc{}.operator++(2); // expected-error{{oh no}}
}
}
@@ -439,22 +478,192 @@ struct Foo {
int I;
constexpr Foo(int I): I(I) {}
- constexpr const Foo &operator=(const Foo &) const // expected-note 2{{disabled: oh no}}
- _diagnose_if(I, "oh no", "error") {
+ constexpr const Foo &operator=(const Foo &) const
+ _diagnose_if(I, "oh no", "error") { // expected-note{{from 'diagnose_if'}}
return *this;
}
- constexpr const Foo &operator=(const Foo &&) const // expected-note{{disabled: oh no}} expected-note{{no known conversion}}
- _diagnose_if(I, "oh no", "error") {
+ constexpr const Foo &operator=(const Foo &&) const
+ _diagnose_if(I, "oh no", "error") { // expected-note{{from 'diagnose_if'}}
return *this;
}
};
+struct Bar {
+ int I;
+ constexpr Bar(int I) _diagnose_if(I == 1, "oh no", "warning") // expected-note{{from 'diagnose_if'}}
+ _diagnose_if(I == 2, "oh no", "error"): I(I) {} // expected-note{{from 'diagnose_if'}}
+};
+
void run() {
constexpr Foo F{0};
constexpr Foo F2{1};
- F2 = F; // expected-error{{selected unavailable operator}}
- F2 = Foo{2}; // expected-error{{selected unavailable operator}}
+ F2 = F; // expected-error{{oh no}}
+ F2 = Foo{2}; // expected-error{{oh no}}
+
+ Bar{0};
+ Bar{1}; // expected-warning{{oh no}}
+ Bar{2}; // expected-error{{oh no}}
+}
+}
+
+namespace ref_init {
+struct Bar {};
+struct Baz {};
+struct Foo {
+ int i;
+ constexpr Foo(int i): i(i) {}
+ operator const Bar &() const _diagnose_if(i, "oh no", "warning"); // expected-note{{from 'diagnose_if'}}
+ operator const Baz &() const _diagnose_if(i, "oh no", "error"); // expected-note{{from 'diagnose_if'}}
+};
+void fooBar(const Bar &b);
+void fooBaz(const Baz &b);
+
+void run() {
+ fooBar(Foo{0});
+ fooBar(Foo{1}); // expected-warning{{oh no}}
+ fooBaz(Foo{0});
+ fooBaz(Foo{1}); // expected-error{{oh no}}
+}
+}
+
+namespace udl {
+void operator""_fn(char c)_diagnose_if(c == 1, "oh no", "warning") // expected-note{{from 'diagnose_if'}}
+ _diagnose_if(c == 2, "oh no", "error"); // expected-note{{from 'diagnose_if'}}
+
+void run() {
+ '\0'_fn;
+ '\1'_fn; // expected-warning{{oh no}}
+ '\2'_fn; // expected-error{{oh no}}
+}
+}
+
+namespace PR31638 {
+struct String {
+ String(char const* __s) _diagnose_if(__s == nullptr, "oh no ptr", "warning"); // expected-note{{from 'diagnose_if'}}
+ String(int __s) _diagnose_if(__s != 0, "oh no int", "warning"); // expected-note{{from 'diagnose_if'}}
+};
+
+void run() {
+ String s(nullptr); // expected-warning{{oh no ptr}}
+ String ss(42); // expected-warning{{oh no int}}
+}
+}
+
+namespace PR31639 {
+struct Foo {
+ Foo(int I) __attribute__((diagnose_if(I, "oh no", "error"))); // expected-note{{from 'diagnose_if'}}
+};
+
+void bar() { Foo f(1); } // expected-error{{oh no}}
+}
+
+namespace user_defined_conversion {
+struct Foo {
+ int i;
+ constexpr Foo(int i): i(i) {}
+ operator size_t() const _diagnose_if(i == 1, "oh no", "warning") // expected-note{{from 'diagnose_if'}}
+ _diagnose_if(i == 2, "oh no", "error"); // expected-note{{from 'diagnose_if'}}
+};
+
+void run() {
+ // `new T[N]`, where N is implicitly convertible to size_t, calls
+ // PerformImplicitConversion directly. This lets us test the diagnostic logic
+ // in PerformImplicitConversion.
+ new int[Foo{0}];
+ new int[Foo{1}]; // expected-warning{{oh no}}
+ new int[Foo{2}]; // expected-error{{oh no}}
+}
+}
+
+namespace std {
+ template <typename T>
+ struct initializer_list {
+ const T *ptr;
+ size_t elems;
+
+ constexpr size_t size() const { return elems; }
+ };
+}
+
+namespace initializer_lists {
+struct Foo {
+ Foo(std::initializer_list<int> l)
+ _diagnose_if(l.size() == 1, "oh no", "warning") // expected-note{{from 'diagnose_if'}}
+ _diagnose_if(l.size() == 2, "oh no", "error") {} // expected-note{{from 'diagnose_if'}}
+};
+
+void run() {
+ Foo{std::initializer_list<int>{}};
+ Foo{std::initializer_list<int>{1}}; // expected-warning{{oh no}}
+ Foo{std::initializer_list<int>{1, 2}}; // expected-error{{oh no}}
+ Foo{std::initializer_list<int>{1, 2, 3}};
+}
+}
+
+namespace range_for_loop {
+ namespace adl {
+ struct Foo {
+ int i;
+ constexpr Foo(int i): i(i) {}
+ };
+ void **begin(const Foo &f) _diagnose_if(f.i, "oh no", "warning");
+ void **end(const Foo &f) _diagnose_if(f.i, "oh no", "warning");
+
+ struct Bar {
+ int i;
+ constexpr Bar(int i): i(i) {}
+ };
+ void **begin(const Bar &b) _diagnose_if(b.i, "oh no", "error");
+ void **end(const Bar &b) _diagnose_if(b.i, "oh no", "error");
+ }
+
+ void run() {
+ for (void *p : adl::Foo(0)) {}
+ // FIXME: This should emit diagnostics. It seems that our constexpr
+ // evaluator isn't able to evaluate `adl::Foo(1)` as a constant, though.
+ for (void *p : adl::Foo(1)) {}
+
+ for (void *p : adl::Bar(0)) {}
+ // FIXME: Same thing.
+ for (void *p : adl::Bar(1)) {}
+ }
+}
+
+namespace operator_new {
+struct Foo {
+ int j;
+ static void *operator new(size_t i) _diagnose_if(i, "oh no", "warning");
+};
+
+struct Bar {
+ int j;
+ static void *operator new(size_t i) _diagnose_if(!i, "oh no", "warning");
+};
+
+void run() {
+ // FIXME: This should emit a diagnostic.
+ new Foo();
+ // This is here because we sometimes pass a dummy argument `operator new`. We
+ // should ignore this, rather than complaining about it.
+ new Bar();
+}
+}
+
+namespace contextual_implicit_conv {
+struct Foo {
+ int i;
+ constexpr Foo(int i): i(i) {}
+ constexpr operator int() const _diagnose_if(i == 1, "oh no", "warning") // expected-note{{from 'diagnose_if'}}
+ _diagnose_if(i == 2, "oh no", "error") { // expected-note{{from 'diagnose_if'}}
+ return i;
+ }
+};
+
+void run() {
+ switch (constexpr Foo i = 0) { default: break; }
+ switch (constexpr Foo i = 1) { default: break; } // expected-warning{{oh no}}
+ switch (constexpr Foo i = 2) { default: break; } // expected-error{{oh no}}
}
}