llvm-project/clang/test/SemaCXX/typo-correction-cxx11.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

62 lines
1.4 KiB
C++

// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
namespace PR23186 {
decltype(ned); // expected-error {{use of undeclared identifier 'ned'}}
// The code below was triggering an UNREACHABLE in ASTContext::getTypeInfoImpl
// once the above code failed to recover properly after making the bogus
// correction of 'ned' to 'new'.
template <typename>
struct S {
enum { V };
void f() {
switch (0)
case V:
;
}
};
}
namespace PR23140 {
auto lneed = gned.*[] {}; // expected-error-re {{use of undeclared identifier 'gned'{{$}}}}
void test(int aaa, int bbb, int thisvar) {
int thatval = aaa * (bbb + thatvar); // expected-error {{use of undeclared identifier 'thatvar'; did you mean 'thatval'}} \
expected-note {{'thatval' declared here}}
}
}
namespace PR18854 {
void f() {
for (auto&& x : e) { // expected-error-re {{use of undeclared identifier 'e'{{$}}}}
auto Functor = [x]() {};
long Alignment = __alignof__(Functor);
}
}
}
namespace NewTypoExprFromResolvingTypoAmbiguity {
struct A {
void Swap(A *other);
};
struct pair {
int first;
A *second;
};
struct map {
public:
void swap(map &x);
pair find(int x);
};
void run(A *annotations) {
map new_annotations;
auto &annotation = *annotations;
auto new_it = new_annotations.find(5);
auto &new_anotation = new_it.second;
new_annotation->Swap(&annotation); // expected-error {{use of undeclared identifier 'new_annotation'}}
}
}