dblaikie created this revision.
dblaikie added a reviewer: rsmith.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
Because diagnostics and their notes are not connected at the API level,
if the error message for an overload is emitted, then the overload
candidates are completed - if a diagnostic is emitted during that work,
the notes related to overload candidates would be attached to the latter
diagnostic, not the original error. Sort of worse, if the latter
diagnostic was disabled, the notes are disabled.
Repository:
rC Clang
https://reviews.llvm.org/D61357
Files:
include/clang/AST/TemplateName.h
include/clang/Basic/PartialDiagnostic.h
include/clang/Sema/Overload.h
lib/AST/TemplateName.cpp
lib/Sema/SemaCast.cpp
lib/Sema/SemaExprCXX.cpp
lib/Sema/SemaInit.cpp
lib/Sema/SemaOverload.cpp
lib/Sema/SemaStmt.cpp
test/SemaCXX/overload-template.cpp
Index: test/SemaCXX/overload-template.cpp
===================================================================
--- /dev/null
+++ test/SemaCXX/overload-template.cpp
@@ -0,0 +1,35 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+enum copy_traits { movable = 1 };
+
+template <int>
+struct optional_ctor_base {};
+template <typename T>
+struct ctor_copy_traits {
+ // this would produce a c++98-compat warning, which would erroneously get the
+ // no-matching-function-call error's notes attached to it (or suppress those
+ // notes if this diagnostic was suppressed, as it is in this case)
+ static constexpr int traits = copy_traits::movable;
+};
+template <typename T>
+struct optional : optional_ctor_base<ctor_copy_traits<T>::traits> {
+ template <typename U>
+ constexpr optional(U&& v);
+};
+struct A {};
+struct XA {
+ XA(const A&);
+};
+struct B {};
+struct XB {
+ XB(const B&);
+ XB(const optional<B>&);
+};
+struct YB : XB {
+ using XB::XB;
+};
+void InsertRow(const XA&, const YB&); // expected-note {{candidate function not viable: no known conversion from 'int' to 'const XA' for 1st argument}}
+void ReproducesBugSimply() {
+ InsertRow(3, B{}); // expected-error {{no matching function for call to 'InsertRow'}}
+}
+
Index: lib/Sema/SemaStmt.cpp
===================================================================
--- lib/Sema/SemaStmt.cpp
+++ lib/Sema/SemaStmt.cpp
@@ -2224,9 +2224,11 @@
return Sema::FRS_Success;
case Sema::FRS_NoViableFunction:
- SemaRef.Diag(BeginRange->getBeginLoc(), diag::err_for_range_invalid)
- << BeginRange->getType() << BEFFound;
- CandidateSet->NoteCandidates(SemaRef, OCD_AllCandidates, BeginRange);
+ CandidateSet->NoteCandidates(
+ PartialDiagnosticAt(BeginRange->getBeginLoc(),
+ SemaRef.PDiag(diag::err_for_range_invalid)
+ << BeginRange->getType() << BEFFound),
+ SemaRef, OCD_AllCandidates, BeginRange);
LLVM_FALLTHROUGH;
case Sema::FRS_DiagnosticIssued:
@@ -2523,9 +2525,12 @@
// Otherwise, emit diagnostics if we haven't already.
if (RangeStatus == FRS_NoViableFunction) {
Expr *Range = BEFFailure ? EndRangeRef.get() : BeginRangeRef.get();
- Diag(Range->getBeginLoc(), diag::err_for_range_invalid)
- << RangeLoc << Range->getType() << BEFFailure;
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Range);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(Range->getBeginLoc(),
+ PDiag(diag::err_for_range_invalid)
+ << RangeLoc << Range->getType()
+ << BEFFailure),
+ *this, OCD_AllCandidates, Range);
}
// Return an error if no fix was discovered.
if (RangeStatus != FRS_Success)
Index: lib/Sema/SemaOverload.cpp
===================================================================
--- lib/Sema/SemaOverload.cpp
+++ lib/Sema/SemaOverload.cpp
@@ -3504,6 +3504,8 @@
OverloadingResult OvResult =
IsUserDefinedConversion(*this, From, ToType, ICS.UserDefined,
CandidateSet, false, false);
+
+ auto Cands = CandidateSet.CompleteCandidates(*this, OCD_AllCandidates, From);
if (OvResult == OR_Ambiguous)
Diag(From->getBeginLoc(), diag::err_typecheck_ambiguous_condition)
<< From->getType() << ToType << From->getSourceRange();
@@ -3515,7 +3517,9 @@
<< false << From->getType() << From->getSourceRange() << ToType;
} else
return false;
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, From);
+
+ CandidateSet.NoteCandidates(
+ *this, From, Cands);
return true;
}
@@ -10744,11 +10748,9 @@
}
}
-/// When overload resolution fails, prints diagnostic messages containing the
-/// candidates in the candidate set.
-void OverloadCandidateSet::NoteCandidates(
+SmallVector<OverloadCandidate *, 32> OverloadCandidateSet::CompleteCandidates(
Sema &S, OverloadCandidateDisplayKind OCD, ArrayRef<Expr *> Args,
- StringRef Opc, SourceLocation OpLoc,
+ SourceLocation OpLoc,
llvm::function_ref<bool(OverloadCandidate &)> Filter) {
// Sort the candidates by viability and position. Sorting directly would
// be prohibitive, so we make a set of pointers and sort those.
@@ -10771,12 +10773,32 @@
llvm::stable_sort(
Cands, CompareOverloadCandidatesForDisplay(S, OpLoc, Args.size(), Kind));
+ return Cands;
+}
+
+/// When overload resolution fails, prints diagnostic messages containing the
+/// candidates in the candidate set.
+void OverloadCandidateSet::NoteCandidates(PartialDiagnosticAt PD,
+ Sema &S, OverloadCandidateDisplayKind OCD, ArrayRef<Expr *> Args,
+ StringRef Opc, SourceLocation OpLoc,
+ llvm::function_ref<bool(OverloadCandidate &)> Filter) {
+
+ auto Cands = CompleteCandidates(S, OCD, Args, OpLoc, Filter);
+
+ S.Diag(PD.first, PD.second);
+
+ NoteCandidates(S, Args, Cands, Opc, OpLoc);
+}
+
+void OverloadCandidateSet::NoteCandidates(Sema &S, ArrayRef<Expr *> Args,
+ ArrayRef<OverloadCandidate *> Cands,
+ StringRef Opc, SourceLocation OpLoc) {
bool ReportedAmbiguousConversions = false;
- SmallVectorImpl<OverloadCandidate*>::iterator I, E;
const OverloadsShown ShowOverloads = S.Diags.getShowOverloads();
unsigned CandsShown = 0;
- for (I = Cands.begin(), E = Cands.end(); I != E; ++I) {
+ auto I = Cands.begin(), E = Cands.end();
+ for (; I != E; ++I) {
OverloadCandidate *Cand = *I;
// Set an arbitrary limit on the number of candidate functions we'll spam
@@ -12095,22 +12117,29 @@
}
}
- SemaRef.Diag(Fn->getBeginLoc(), diag::err_ovl_no_viable_function_in_call)
- << ULE->getName() << Fn->getSourceRange();
- CandidateSet->NoteCandidates(SemaRef, OCD_AllCandidates, Args);
+ CandidateSet->NoteCandidates(
+ PartialDiagnosticAt(
+ Fn->getBeginLoc(),
+ SemaRef.PDiag(diag::err_ovl_no_viable_function_in_call)
+ << ULE->getName() << Fn->getSourceRange()),
+ SemaRef, OCD_AllCandidates, Args);
break;
}
case OR_Ambiguous:
- SemaRef.Diag(Fn->getBeginLoc(), diag::err_ovl_ambiguous_call)
- << ULE->getName() << Fn->getSourceRange();
- CandidateSet->NoteCandidates(SemaRef, OCD_ViableCandidates, Args);
+ CandidateSet->NoteCandidates(
+ PartialDiagnosticAt(Fn->getBeginLoc(),
+ SemaRef.PDiag(diag::err_ovl_ambiguous_call)
+ << ULE->getName() << Fn->getSourceRange()),
+ SemaRef, OCD_ViableCandidates, Args);
break;
case OR_Deleted: {
- SemaRef.Diag(Fn->getBeginLoc(), diag::err_ovl_deleted_call)
- << ULE->getName() << Fn->getSourceRange();
- CandidateSet->NoteCandidates(SemaRef, OCD_AllCandidates, Args);
+ CandidateSet->NoteCandidates(
+ PartialDiagnosticAt(Fn->getBeginLoc(),
+ SemaRef.PDiag(diag::err_ovl_deleted_call)
+ << ULE->getName() << Fn->getSourceRange()),
+ SemaRef, OCD_AllCandidates, Args);
// We emitted an error for the unavailable/deleted function call but keep
// the call in the AST.
@@ -12344,19 +12373,22 @@
break;
case OR_Ambiguous:
- Diag(OpLoc, diag::err_ovl_ambiguous_oper_unary)
- << UnaryOperator::getOpcodeStr(Opc)
- << Input->getType()
- << Input->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_ViableCandidates, ArgsArray,
- UnaryOperator::getOpcodeStr(Opc), OpLoc);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(OpLoc,
+ PDiag(diag::err_ovl_ambiguous_oper_unary)
+ << UnaryOperator::getOpcodeStr(Opc)
+ << Input->getType() << Input->getSourceRange()),
+ *this, OCD_ViableCandidates, ArgsArray,
+ UnaryOperator::getOpcodeStr(Opc), OpLoc);
return ExprError();
case OR_Deleted:
- Diag(OpLoc, diag::err_ovl_deleted_oper)
- << UnaryOperator::getOpcodeStr(Opc) << Input->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, ArgsArray,
- UnaryOperator::getOpcodeStr(Opc), OpLoc);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(OpLoc, PDiag(diag::err_ovl_deleted_oper)
+ << UnaryOperator::getOpcodeStr(Opc)
+ << Input->getSourceRange()),
+ *this, OCD_AllCandidates, ArgsArray, UnaryOperator::getOpcodeStr(Opc),
+ OpLoc);
return ExprError();
}
@@ -12590,6 +12622,9 @@
// operator do not fall through to handling in built-in, but report that
// no overloaded assignment operator found
ExprResult Result = ExprError();
+ StringRef OpcStr = BinaryOperator::getOpcodeStr(Opc);
+ auto Cands = CandidateSet.CompleteCandidates(*this, OCD_AllCandidates,
+ Args, OpLoc);
if (Args[0]->getType()->isRecordType() &&
Opc >= BO_Assign && Opc <= BO_OrAssign) {
Diag(OpLoc, diag::err_ovl_no_viable_oper)
@@ -12614,19 +12649,20 @@
}
assert(Result.isInvalid() &&
"C++ binary operator overloading is missing candidates!");
- if (Result.isInvalid())
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Args,
- BinaryOperator::getOpcodeStr(Opc), OpLoc);
+ CandidateSet.NoteCandidates(*this, Args, Cands, OpcStr, OpLoc);
return Result;
}
case OR_Ambiguous:
- Diag(OpLoc, diag::err_ovl_ambiguous_oper_binary)
- << BinaryOperator::getOpcodeStr(Opc)
- << Args[0]->getType() << Args[1]->getType()
- << Args[0]->getSourceRange() << Args[1]->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_ViableCandidates, Args,
- BinaryOperator::getOpcodeStr(Opc), OpLoc);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(OpLoc, PDiag(diag::err_ovl_ambiguous_oper_binary)
+ << BinaryOperator::getOpcodeStr(Opc)
+ << Args[0]->getType()
+ << Args[1]->getType()
+ << Args[0]->getSourceRange()
+ << Args[1]->getSourceRange()),
+ *this, OCD_ViableCandidates, Args, BinaryOperator::getOpcodeStr(Opc),
+ OpLoc);
return ExprError();
case OR_Deleted:
@@ -12640,13 +12676,14 @@
// explain why it's deleted.
NoteDeletedFunction(Method);
return ExprError();
- } else {
- Diag(OpLoc, diag::err_ovl_deleted_oper)
- << BinaryOperator::getOpcodeStr(Opc) << Args[0]->getSourceRange()
- << Args[1]->getSourceRange();
}
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Args,
- BinaryOperator::getOpcodeStr(Opc), OpLoc);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(OpLoc, PDiag(diag::err_ovl_deleted_oper)
+ << BinaryOperator::getOpcodeStr(Opc)
+ << Args[0]->getSourceRange()
+ << Args[1]->getSourceRange()),
+ *this, OCD_AllCandidates, Args, BinaryOperator::getOpcodeStr(Opc),
+ OpLoc);
return ExprError();
}
@@ -12788,32 +12825,34 @@
}
case OR_No_Viable_Function: {
- if (CandidateSet.empty())
- Diag(LLoc, diag::err_ovl_no_oper)
- << Args[0]->getType() << /*subscript*/ 0
- << Args[0]->getSourceRange() << Args[1]->getSourceRange();
- else
- Diag(LLoc, diag::err_ovl_no_viable_subscript)
- << Args[0]->getType()
- << Args[0]->getSourceRange() << Args[1]->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Args,
- "[]", LLoc);
+ PartialDiagnostic PD = CandidateSet.empty()
+ ? (PDiag(diag::err_ovl_no_oper)
+ << Args[0]->getType() << /*subscript*/ 0
+ << Args[0]->getSourceRange() << Args[1]->getSourceRange())
+ : (PDiag(diag::err_ovl_no_viable_subscript)
+ << Args[0]->getType() << Args[0]->getSourceRange()
+ << Args[1]->getSourceRange());
+ CandidateSet.NoteCandidates(PartialDiagnosticAt(LLoc, PD), *this,
+ OCD_AllCandidates, Args, "[]", LLoc);
return ExprError();
}
case OR_Ambiguous:
- Diag(LLoc, diag::err_ovl_ambiguous_oper_binary)
- << "[]"
- << Args[0]->getType() << Args[1]->getType()
- << Args[0]->getSourceRange() << Args[1]->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_ViableCandidates, Args,
- "[]", LLoc);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(LLoc, PDiag(diag::err_ovl_ambiguous_oper_binary)
+ << "[]" << Args[0]->getType()
+ << Args[1]->getType()
+ << Args[0]->getSourceRange()
+ << Args[1]->getSourceRange()),
+ *this, OCD_ViableCandidates, Args, "[]", LLoc);
return ExprError();
case OR_Deleted:
- Diag(LLoc, diag::err_ovl_deleted_oper)
- << "[]" << Args[0]->getSourceRange() << Args[1]->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Args, "[]", LLoc);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(LLoc, PDiag(diag::err_ovl_deleted_oper)
+ << "[]" << Args[0]->getSourceRange()
+ << Args[1]->getSourceRange()),
+ *this, OCD_AllCandidates, Args, "[]", LLoc);
return ExprError();
}
@@ -12982,24 +13021,30 @@
break;
case OR_No_Viable_Function:
- Diag(UnresExpr->getMemberLoc(),
- diag::err_ovl_no_viable_member_function_in_call)
- << DeclName << MemExprE->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Args);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(
+ UnresExpr->getMemberLoc(),
+ PDiag(diag::err_ovl_no_viable_member_function_in_call)
+ << DeclName << MemExprE->getSourceRange()),
+ *this, OCD_AllCandidates, Args);
// FIXME: Leaking incoming expressions!
return ExprError();
case OR_Ambiguous:
- Diag(UnresExpr->getMemberLoc(), diag::err_ovl_ambiguous_member_call)
- << DeclName << MemExprE->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Args);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(UnresExpr->getMemberLoc(),
+ PDiag(diag::err_ovl_ambiguous_member_call)
+ << DeclName << MemExprE->getSourceRange()),
+ *this, OCD_AllCandidates, Args);
// FIXME: Leaking incoming expressions!
return ExprError();
case OR_Deleted:
- Diag(UnresExpr->getMemberLoc(), diag::err_ovl_deleted_member_call)
- << DeclName << MemExprE->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Args);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(UnresExpr->getMemberLoc(),
+ PDiag(diag::err_ovl_deleted_member_call)
+ << DeclName << MemExprE->getSourceRange()),
+ *this, OCD_AllCandidates, Args);
// FIXME: Leaking incoming expressions!
return ExprError();
}
@@ -13203,27 +13248,35 @@
// below.
break;
- case OR_No_Viable_Function:
- if (CandidateSet.empty())
- Diag(Object.get()->getBeginLoc(), diag::err_ovl_no_oper)
- << Object.get()->getType() << /*call*/ 1
- << Object.get()->getSourceRange();
- else
- Diag(Object.get()->getBeginLoc(), diag::err_ovl_no_viable_object_call)
- << Object.get()->getType() << Object.get()->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Args);
+ case OR_No_Viable_Function: {
+ PartialDiagnostic PD =
+ CandidateSet.empty()
+ ? (PDiag(diag::err_ovl_no_oper)
+ << Object.get()->getType() << /*call*/ 1
+ << Object.get()->getSourceRange())
+ : (PDiag(diag::err_ovl_no_viable_object_call)
+ << Object.get()->getType() << Object.get()->getSourceRange());
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(Object.get()->getBeginLoc(), PD), *this,
+ OCD_AllCandidates, Args);
break;
-
+ }
case OR_Ambiguous:
- Diag(Object.get()->getBeginLoc(), diag::err_ovl_ambiguous_object_call)
- << Object.get()->getType() << Object.get()->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_ViableCandidates, Args);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(Object.get()->getBeginLoc(),
+ PDiag(diag::err_ovl_ambiguous_object_call)
+ << Object.get()->getType()
+ << Object.get()->getSourceRange()),
+ *this, OCD_ViableCandidates, Args);
break;
case OR_Deleted:
- Diag(Object.get()->getBeginLoc(), diag::err_ovl_deleted_object_call)
- << Object.get()->getType() << Object.get()->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Args);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(Object.get()->getBeginLoc(),
+ PDiag(diag::err_ovl_deleted_object_call)
+ << Object.get()->getType()
+ << Object.get()->getSourceRange()),
+ *this, OCD_AllCandidates, Args);
break;
}
@@ -13422,7 +13475,8 @@
// Overload resolution succeeded; we'll build the call below.
break;
- case OR_No_Viable_Function:
+ case OR_No_Viable_Function: {
+ auto Cands = CandidateSet.CompleteCandidates(*this, OCD_AllCandidates, Base);
if (CandidateSet.empty()) {
QualType BaseType = Base->getType();
if (NoArrowOperatorFound) {
@@ -13440,18 +13494,22 @@
} else
Diag(OpLoc, diag::err_ovl_no_viable_oper)
<< "operator->" << Base->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Base);
+ CandidateSet.NoteCandidates(*this, Base, Cands);
return ExprError();
-
+ }
case OR_Ambiguous:
- Diag(OpLoc, diag::err_ovl_ambiguous_oper_unary)
- << "->" << Base->getType() << Base->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_ViableCandidates, Base);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(OpLoc, PDiag(diag::err_ovl_ambiguous_oper_unary)
+ << "->" << Base->getType()
+ << Base->getSourceRange()),
+ *this, OCD_ViableCandidates, Base);
return ExprError();
case OR_Deleted:
- Diag(OpLoc, diag::err_ovl_deleted_oper) << "->" << Base->getSourceRange();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Base);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(OpLoc, PDiag(diag::err_ovl_deleted_oper)
+ << "->" << Base->getSourceRange()),
+ *this, OCD_AllCandidates, Base);
return ExprError();
}
@@ -13513,14 +13571,18 @@
break;
case OR_No_Viable_Function:
- Diag(UDSuffixLoc, diag::err_ovl_no_viable_function_in_call)
- << R.getLookupName();
- CandidateSet.NoteCandidates(*this, OCD_AllCandidates, Args);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(UDSuffixLoc,
+ PDiag(diag::err_ovl_no_viable_function_in_call)
+ << R.getLookupName()),
+ *this, OCD_AllCandidates, Args);
return ExprError();
case OR_Ambiguous:
- Diag(R.getNameLoc(), diag::err_ovl_ambiguous_call) << R.getLookupName();
- CandidateSet.NoteCandidates(*this, OCD_ViableCandidates, Args);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(R.getNameLoc(), PDiag(diag::err_ovl_ambiguous_call)
+ << R.getLookupName()),
+ *this, OCD_ViableCandidates, Args);
return ExprError();
}
Index: lib/Sema/SemaInit.cpp
===================================================================
--- lib/Sema/SemaInit.cpp
+++ lib/Sema/SemaInit.cpp
@@ -5971,21 +5971,25 @@
break;
case OR_No_Viable_Function:
- S.Diag(Loc, IsExtraneousCopy && !S.isSFINAEContext()
- ? diag::ext_rvalue_to_reference_temp_copy_no_viable
- : diag::err_temp_copy_no_viable)
- << (int)Entity.getKind() << CurInitExpr->getType()
- << CurInitExpr->getSourceRange();
- CandidateSet.NoteCandidates(S, OCD_AllCandidates, CurInitExpr);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(
+ Loc, S.PDiag(IsExtraneousCopy && !S.isSFINAEContext()
+ ? diag::ext_rvalue_to_reference_temp_copy_no_viable
+ : diag::err_temp_copy_no_viable)
+ << (int)Entity.getKind() << CurInitExpr->getType()
+ << CurInitExpr->getSourceRange()),
+ S, OCD_AllCandidates, CurInitExpr);
if (!IsExtraneousCopy || S.isSFINAEContext())
return ExprError();
return CurInit;
case OR_Ambiguous:
- S.Diag(Loc, diag::err_temp_copy_ambiguous)
- << (int)Entity.getKind() << CurInitExpr->getType()
- << CurInitExpr->getSourceRange();
- CandidateSet.NoteCandidates(S, OCD_ViableCandidates, CurInitExpr);
+ CandidateSet.NoteCandidates(
+ PartialDiagnosticAt(Loc, S.PDiag(diag::err_temp_copy_ambiguous)
+ << (int)Entity.getKind()
+ << CurInitExpr->getType()
+ << CurInitExpr->getSourceRange()),
+ S, OCD_ViableCandidates, CurInitExpr);
return ExprError();
case OR_Deleted:
@@ -6120,13 +6124,13 @@
break;
case OR_No_Viable_Function:
- S.Diag(Loc, Diag);
- CandidateSet.NoteCandidates(S, OCD_AllCandidates, CurInitExpr);
+ CandidateSet.NoteCandidates(PartialDiagnosticAt(Loc, Diag), S,
+ OCD_AllCandidates, CurInitExpr);
break;
case OR_Ambiguous:
- S.Diag(Loc, Diag);
- CandidateSet.NoteCandidates(S, OCD_ViableCandidates, CurInitExpr);
+ CandidateSet.NoteCandidates(PartialDiagnosticAt(Loc, Diag), S,
+ OCD_ViableCandidates, CurInitExpr);
break;
case OR_Deleted:
@@ -8399,19 +8403,22 @@
case FK_UserConversionOverloadFailed:
switch (FailedOverloadResult) {
case OR_Ambiguous:
- if (Failure == FK_UserConversionOverloadFailed)
- S.Diag(Kind.getLocation(), diag::err_typecheck_ambiguous_condition)
- << OnlyArg->getType() << DestType
- << Args[0]->getSourceRange();
- else
- S.Diag(Kind.getLocation(), diag::err_ref_init_ambiguous)
- << DestType << OnlyArg->getType()
- << Args[0]->getSourceRange();
- FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, Args);
+ FailedCandidateSet.NoteCandidates(
+ PartialDiagnosticAt(
+ Kind.getLocation(),
+ Failure == FK_UserConversionOverloadFailed
+ ? (S.PDiag(diag::err_typecheck_ambiguous_condition)
+ << OnlyArg->getType() << DestType
+ << Args[0]->getSourceRange())
+ : (S.PDiag(diag::err_ref_init_ambiguous)
+ << DestType << OnlyArg->getType()
+ << Args[0]->getSourceRange())),
+ S, OCD_ViableCandidates, Args);
break;
- case OR_No_Viable_Function:
+ case OR_No_Viable_Function: {
+ auto Cands = FailedCandidateSet.CompleteCandidates(S, OCD_AllCandidates, Args);
if (!S.RequireCompleteType(Kind.getLocation(),
DestType.getNonReferenceType(),
diag::err_typecheck_nonviable_condition_incomplete,
@@ -8421,9 +8428,9 @@
<< OnlyArg->getType() << Args[0]->getSourceRange()
<< DestType.getNonReferenceType();
- FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, Args);
+ FailedCandidateSet.NoteCandidates(S, Args, Cands);
break;
-
+ }
case OR_Deleted: {
S.Diag(Kind.getLocation(), diag::err_typecheck_deleted_function)
<< OnlyArg->getType() << DestType.getNonReferenceType()
@@ -8587,9 +8594,11 @@
// bad.
switch (FailedOverloadResult) {
case OR_Ambiguous:
- S.Diag(Kind.getLocation(), diag::err_ovl_ambiguous_init)
- << DestType << ArgsRange;
- FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, Args);
+ FailedCandidateSet.NoteCandidates(
+ PartialDiagnosticAt(Kind.getLocation(),
+ S.PDiag(diag::err_ovl_ambiguous_init)
+ << DestType << ArgsRange),
+ S, OCD_ViableCandidates, Args);
break;
case OR_No_Viable_Function:
@@ -8638,9 +8647,12 @@
break;
}
- S.Diag(Kind.getLocation(), diag::err_ovl_no_viable_function_in_init)
- << DestType << ArgsRange;
- FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, Args);
+ FailedCandidateSet.NoteCandidates(
+ PartialDiagnosticAt(
+ Kind.getLocation(),
+ S.PDiag(diag::err_ovl_no_viable_function_in_init)
+ << DestType << ArgsRange),
+ S, OCD_AllCandidates, Args);
break;
case OR_Deleted: {
@@ -9438,12 +9450,15 @@
switch (Result) {
case OR_Ambiguous:
- Diag(Kind.getLocation(), diag::err_deduced_class_template_ctor_ambiguous)
- << TemplateName;
// FIXME: For list-initialization candidates, it'd usually be better to
// list why they were not viable when given the initializer list itself as
// an argument.
- Candidates.NoteCandidates(*this, OCD_ViableCandidates, Inits);
+ Candidates.NoteCandidates(
+ PartialDiagnosticAt(
+ Kind.getLocation(),
+ PDiag(diag::err_deduced_class_template_ctor_ambiguous)
+ << TemplateName),
+ *this, OCD_ViableCandidates, Inits);
return QualType();
case OR_No_Viable_Function: {
@@ -9451,11 +9466,13 @@
cast<ClassTemplateDecl>(Template)->getTemplatedDecl();
bool Complete =
isCompleteType(Kind.getLocation(), Context.getTypeDeclType(Primary));
- Diag(Kind.getLocation(),
- Complete ? diag::err_deduced_class_template_ctor_no_viable
- : diag::err_deduced_class_template_incomplete)
- << TemplateName << !Guides.empty();
- Candidates.NoteCandidates(*this, OCD_AllCandidates, Inits);
+ Candidates.NoteCandidates(
+ PartialDiagnosticAt(
+ Kind.getLocation(),
+ PDiag(Complete ? diag::err_deduced_class_template_ctor_no_viable
+ : diag::err_deduced_class_template_incomplete)
+ << TemplateName << !Guides.empty()),
+ *this, OCD_AllCandidates, Inits);
return QualType();
}
Index: lib/Sema/SemaExprCXX.cpp
===================================================================
--- lib/Sema/SemaExprCXX.cpp
+++ lib/Sema/SemaExprCXX.cpp
@@ -2301,8 +2301,8 @@
}
if (Diagnose) {
- S.Diag(R.getNameLoc(), diag::err_ovl_no_viable_function_in_call)
- << R.getLookupName() << Range;
+ PartialDiagnosticAt PD(R.getNameLoc(), S.PDiag(diag::err_ovl_no_viable_function_in_call)
+ << R.getLookupName() << Range);
// If we have aligned candidates, only note the align_val_t candidates
// from AlignedCandidates and the non-align_val_t candidates from
@@ -2317,30 +2317,34 @@
// This was an overaligned allocation, so list the aligned candidates
// first.
Args.insert(Args.begin() + 1, AlignArg);
- AlignedCandidates->NoteCandidates(S, OCD_AllCandidates, Args, "",
+ AlignedCandidates->NoteCandidates(PD, S, OCD_AllCandidates, Args, "",
R.getNameLoc(), IsAligned);
Args.erase(Args.begin() + 1);
- Candidates.NoteCandidates(S, OCD_AllCandidates, Args, "", R.getNameLoc(),
+ Candidates.NoteCandidates(PD, S, OCD_AllCandidates, Args, "", R.getNameLoc(),
IsUnaligned);
} else {
- Candidates.NoteCandidates(S, OCD_AllCandidates, Args);
+ Candidates.NoteCandidates(PD, S, OCD_AllCandidates, Args);
}
}
return true;
case OR_Ambiguous:
if (Diagnose) {
- S.Diag(R.getNameLoc(), diag::err_ovl_ambiguous_call)
- << R.getLookupName() << Range;
- Candidates.NoteCandidates(S, OCD_ViableCandidates, Args);
+ Candidates.NoteCandidates(
+ PartialDiagnosticAt(R.getNameLoc(),
+ S.PDiag(diag::err_ovl_ambiguous_call)
+ << R.getLookupName() << Range),
+ S, OCD_ViableCandidates, Args);
}
return true;
case OR_Deleted: {
if (Diagnose) {
- S.Diag(R.getNameLoc(), diag::err_ovl_deleted_call)
- << R.getLookupName() << Range;
- Candidates.NoteCandidates(S, OCD_AllCandidates, Args);
+ Candidates.NoteCandidates(
+ PartialDiagnosticAt(R.getNameLoc(),
+ S.PDiag(diag::err_ovl_deleted_call)
+ << R.getLookupName() << Range),
+ S, OCD_AllCandidates, Args);
}
return true;
}
@@ -3504,21 +3508,26 @@
}
case OR_No_Viable_Function:
- S.Diag(R.getNameLoc(), diag::err_ovl_no_viable_function_in_call)
- << R.getLookupName() << Range;
- Candidates.NoteCandidates(S, OCD_AllCandidates, Args);
+ Candidates.NoteCandidates(
+ PartialDiagnosticAt(R.getNameLoc(),
+ S.PDiag(diag::err_ovl_no_viable_function_in_call)
+ << R.getLookupName() << Range),
+ S, OCD_AllCandidates, Args);
return true;
case OR_Ambiguous:
- S.Diag(R.getNameLoc(), diag::err_ovl_ambiguous_call)
- << R.getLookupName() << Range;
- Candidates.NoteCandidates(S, OCD_ViableCandidates, Args);
+ Candidates.NoteCandidates(
+ PartialDiagnosticAt(R.getNameLoc(),
+ S.PDiag(diag::err_ovl_ambiguous_call)
+ << R.getLookupName() << Range),
+ S, OCD_ViableCandidates, Args);
return true;
case OR_Deleted: {
- S.Diag(R.getNameLoc(), diag::err_ovl_deleted_call)
- << R.getLookupName() << Range;
- Candidates.NoteCandidates(S, OCD_AllCandidates, Args);
+ Candidates.NoteCandidates(
+ PartialDiagnosticAt(R.getNameLoc(), S.PDiag(diag::err_ovl_deleted_call)
+ << R.getLookupName() << Range),
+ S, OCD_AllCandidates, Args);
return true;
}
}
Index: lib/Sema/SemaCast.cpp
===================================================================
--- lib/Sema/SemaCast.cpp
+++ lib/Sema/SemaCast.cpp
@@ -399,11 +399,11 @@
break;
}
- S.Diag(range.getBegin(), msg)
- << CT << srcType << destType
- << range << src->getSourceRange();
-
- candidates.NoteCandidates(S, howManyCandidates, src);
+ candidates.NoteCandidates(
+ PartialDiagnosticAt(range.getBegin(),
+ S.PDiag(msg) << CT << srcType << destType << range
+ << src->getSourceRange()),
+ S, howManyCandidates, src);
return true;
}
Index: lib/AST/TemplateName.cpp
===================================================================
--- lib/AST/TemplateName.cpp
+++ lib/AST/TemplateName.cpp
@@ -250,6 +250,20 @@
return DB << NameStr;
}
+const PartialDiagnostic&clang::operator<<(const PartialDiagnostic &PD,
+ TemplateName N) {
+ std::string NameStr;
+ llvm::raw_string_ostream OS(NameStr);
+ LangOptions LO;
+ LO.CPlusPlus = true;
+ LO.Bool = true;
+ OS << '\'';
+ N.print(OS, PrintingPolicy(LO));
+ OS << '\'';
+ OS.flush();
+ return PD << NameStr;
+}
+
void TemplateName::dump(raw_ostream &OS) const {
LangOptions LO; // FIXME!
LO.CPlusPlus = true;
Index: include/clang/Sema/Overload.h
===================================================================
--- include/clang/Sema/Overload.h
+++ include/clang/Sema/Overload.h
@@ -961,13 +961,23 @@
OverloadingResult BestViableFunction(Sema &S, SourceLocation Loc,
OverloadCandidateSet::iterator& Best);
- void NoteCandidates(Sema &S,
- OverloadCandidateDisplayKind OCD,
- ArrayRef<Expr *> Args,
+ SmallVector<OverloadCandidate *, 32> CompleteCandidates(
+ Sema &S, OverloadCandidateDisplayKind OCD, ArrayRef<Expr *> Args,
+ SourceLocation OpLoc = SourceLocation(),
+ llvm::function_ref<bool(OverloadCandidate &)> Filter =
+ [](OverloadCandidate &) { return true; });
+
+ void NoteCandidates(
+ PartialDiagnosticAt PA, Sema &S, OverloadCandidateDisplayKind OCD,
+ ArrayRef<Expr *> Args, StringRef Opc = "",
+ SourceLocation Loc = SourceLocation(),
+ llvm::function_ref<bool(OverloadCandidate &)> Filter =
+ [](OverloadCandidate &) { return true; });
+
+ void NoteCandidates(Sema &S, ArrayRef<Expr *> Args,
+ ArrayRef<OverloadCandidate *> Cands,
StringRef Opc = "",
- SourceLocation Loc = SourceLocation(),
- llvm::function_ref<bool(OverloadCandidate&)> Filter =
- [](OverloadCandidate&) { return true; });
+ SourceLocation OpLoc = SourceLocation());
};
bool isBetterOverloadCandidate(Sema &S,
Index: include/clang/Basic/PartialDiagnostic.h
===================================================================
--- include/clang/Basic/PartialDiagnostic.h
+++ include/clang/Basic/PartialDiagnostic.h
@@ -16,6 +16,7 @@
#define LLVM_CLANG_BASIC_PARTIALDIAGNOSTIC_H
#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/PartialDiagnostic.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/SourceLocation.h"
#include "llvm/ADT/SmallVector.h"
Index: include/clang/AST/TemplateName.h
===================================================================
--- include/clang/AST/TemplateName.h
+++ include/clang/AST/TemplateName.h
@@ -31,6 +31,7 @@
class NestedNameSpecifier;
enum OverloadedOperatorKind : int;
class OverloadedTemplateStorage;
+class PartialDiagnostic;
struct PrintingPolicy;
class QualifiedTemplateName;
class SubstTemplateTemplateParmPackStorage;
@@ -319,6 +320,8 @@
/// into a diagnostic with <<.
const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,
TemplateName N);
+const PartialDiagnostic &operator<<(const PartialDiagnostic &PD,
+ TemplateName N);
/// A structure for storing the information associated with a
/// substituted template template parameter.
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