llvm-project/clang/test/SemaCXX/arrow-operator.cpp
Aaron Ballman 9eef4d1c5f
Remove delayed typo expressions (#143423)
This removes the delayed typo correction functionality from Clang
(regular typo correction still remains) due to fragility of the
solution.

An RFC was posted here:
https://discourse.llvm.org/t/rfc-removing-support-for-delayed-typo-correction/86631
and while that RFC was asking for folks to consider stepping up to be
maintainers, and we did have a few new contributors show some interest,
experiments show that it's likely worth it to remove this functionality
entirely and focus efforts on improving regular typo correction.

This removal fixes ~20 open issues (quite possibly more), improves
compile time performance by roughly .3-.4%
(https://llvm-compile-time-tracker.com/?config=Overview&stat=instructions%3Au&remote=AaronBallman&sortBy=date),
and does not appear to regress diagnostic behavior in a way we wouldn't
find acceptable.

Fixes #142457
Fixes #139913
Fixes #138850
Fixes #137867
Fixes #137860
Fixes #107840
Fixes #93308
Fixes #69470
Fixes #59391
Fixes #58172
Fixes #46215
Fixes #45915
Fixes #45891
Fixes #44490
Fixes #36703
Fixes #32903
Fixes #23312
Fixes #69874
2025-06-13 06:45:40 -04:00

117 lines
2.7 KiB
C++

// RUN: %clang_cc1 -fsyntax-only -verify %s
struct T {
void f();
};
struct A {
T* operator->();
// expected-note@-1 {{member found by ambiguous name lookup}}
};
struct B {
T* operator->();
// expected-note@-1 {{member found by ambiguous name lookup}}
};
struct C : A, B {
};
struct D : A { };
struct E; // expected-note {{forward declaration of 'E'}}
void f(C &c, D& d, E& e) {
c->f();
// expected-error@-1 {{member 'operator->' found in multiple base classes of different types}}
d->f();
e->f(); // expected-error{{incomplete definition of type}}
}
namespace rdar8875304 {
class Point {};
class Line_Segment{ public: Line_Segment(const Point&){} };
class Node { public: Point Location(){ Point p; return p; } };
void f()
{
Node** node1;
Line_Segment(node1->Location()); // expected-error {{not a structure or union}}
}
}
namespace arrow_suggest {
template <typename T>
class wrapped_ptr {
public:
wrapped_ptr(T* ptr) : ptr_(ptr) {}
T* operator->() { return ptr_; }
void Check();
private:
T *ptr_;
};
class Worker {
public:
void DoSomething();
void Chuck();
};
void test() {
wrapped_ptr<Worker> worker(new Worker);
worker.DoSomething(); // expected-error {{no member named 'DoSomething' in 'arrow_suggest::wrapped_ptr<arrow_suggest::Worker>'; did you mean to use '->' instead of '.'?}}
worker.DoSamething(); // expected-error {{no member named 'DoSamething' in 'arrow_suggest::wrapped_ptr<arrow_suggest::Worker>'}}
worker.Chuck(); // expected-error {{no member named 'Chuck' in 'arrow_suggest::wrapped_ptr<arrow_suggest::Worker>'}}
}
} // namespace arrow_suggest
namespace no_crash_dependent_type {
template <class T>
struct A {
void call();
A *operator->();
};
template <class T>
void foo() {
// The "requires an initializer" error seems unnecessary.
A<int> &x = blah[7]; // expected-error {{use of undeclared identifier 'blah'}} \
// expected-error {{requires an initializer}}
// x is dependent.
x->call();
}
void test() {
foo<int>(); // expected-note {{requested here}}
}
} // namespace no_crash_dependent_type
namespace clangd_issue_1073_no_crash_dependent_type {
template <typename T> struct Ptr {
T *operator->();
};
struct Struct {
int len;
};
template <int>
struct TemplateStruct {
Ptr<Struct> val(); // expected-note {{declared here}}
};
template <int I>
void templateFunc(const TemplateStruct<I> &ts) {
Ptr<Struct> ptr = ts.val(); // expected-error {{function is not marked const}}
auto foo = ptr->len;
}
template void templateFunc<0>(const TemplateStruct<0> &); // expected-note {{requested here}}
} // namespace clangd_issue_1073_no_crash_dependent_type