diff options
author | Hans Wennborg <hans@hanshq.net> | 2019-05-06 09:51:10 +0000 |
---|---|---|
committer | Hans Wennborg <hans@hanshq.net> | 2019-05-06 09:51:10 +0000 |
commit | 06edb03dd121a51d2ea4702e224140252a720c86 (patch) | |
tree | 939bf7451f40c9e3145b6c4ae5f6d30328f0b409 /lib/Sema/SemaLookup.cpp | |
parent | 6dab16d8d8d89a49727becbb0d910ddd31983f96 (diff) |
Revert r359949 "[clang] adding explicit(bool) from c++2a"
This caused Clang to start erroring on the following:
struct S {
template <typename = int> explicit S();
};
struct T : S {};
struct U : T {
U();
};
U::U() {}
$ clang -c /tmp/x.cc
/tmp/x.cc:10:4: error: call to implicitly-deleted default constructor of 'T'
U::U() {}
^
/tmp/x.cc:5:12: note: default constructor of 'T' is implicitly deleted
because base class 'S' has no default constructor
struct T : S {};
^
1 error generated.
See discussion on the cfe-commits email thread.
This also reverts the follow-ups r359966 and r359968.
> this patch adds support for the explicit bool specifier.
>
> Changes:
> - The parsing for the explicit(bool) specifier was added in ParseDecl.cpp.
> - The storage of the explicit specifier was changed. the explicit specifier was stored as a boolean value in the FunctionDeclBitfields and in the DeclSpec class. now it is stored as a PointerIntPair<Expr*, 2> with a flag and a potential expression in CXXConstructorDecl, CXXDeductionGuideDecl, CXXConversionDecl and in the DeclSpec class.
> - Following the AST change, Serialization, ASTMatchers, ASTComparator and ASTPrinter were adapted.
> - Template instantiation was adapted to instantiate the potential expressions of the explicit(bool) specifier When instantiating their associated declaration.
> - The Add*Candidate functions were adapted, they now take a Boolean indicating if the context allowing explicit constructor or conversion function and this boolean is used to remove invalid overloads that required template instantiation to be detected.
> - Test for Semantic and Serialization were added.
>
> This patch is not yet complete. I still need to check that interaction with CTAD and deduction guides is correct. and add more tests for AST operations. But I wanted first feedback.
> Perhaps this patch should be spited in smaller patches, but making each patch testable as a standalone may be tricky.
>
> Patch by Tyker
>
> Differential Revision: https://reviews.llvm.org/D60934
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@360024 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Sema/SemaLookup.cpp')
-rw-r--r-- | lib/Sema/SemaLookup.cpp | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/lib/Sema/SemaLookup.cpp b/lib/Sema/SemaLookup.cpp index a91c20e00a..2b7924d244 100644 --- a/lib/Sema/SemaLookup.cpp +++ b/lib/Sema/SemaLookup.cpp @@ -3041,15 +3041,10 @@ Sema::SpecialMemberOverloadResult Sema::LookupSpecialMember(CXXRecordDecl *RD, llvm::makeArrayRef(&Arg, NumArgs), OCS, true); else if (CtorInfo) AddOverloadCandidate(CtorInfo.Constructor, CtorInfo.FoundDecl, - llvm::makeArrayRef(&Arg, NumArgs), OCS, - /*SuppressUserConversions*/ true, - /*PartialOverloading*/ false, - /*AllowExplcit*/ true); + llvm::makeArrayRef(&Arg, NumArgs), OCS, true); else AddOverloadCandidate(M, Cand, llvm::makeArrayRef(&Arg, NumArgs), OCS, - /*SuppressUserConversions*/ true, - /*PartialOverloading*/ false, - /*AllowExplcit*/ true); + true); } else if (FunctionTemplateDecl *Tmpl = dyn_cast<FunctionTemplateDecl>(Cand->getUnderlyingDecl())) { if (SM == CXXCopyAssignment || SM == CXXMoveAssignment) |