From: Chandler Carruth Date: Tue, 23 Aug 2016 02:00:51 +0000 (+0000) Subject: Revert r279486 "Fix regression introduced by r279164" X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=36fa4bbf3fd298a32efe4d9f921b5308ff68eac6;p=clang Revert r279486 "Fix regression introduced by r279164" Build bots seem unhappy and as Richard was leaving he asked me to revert this for him. Doing so. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@279500 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp index 9122030e16..ca4de55fb5 100644 --- a/lib/Sema/SemaDecl.cpp +++ b/lib/Sema/SemaDecl.cpp @@ -11274,8 +11274,9 @@ Sema::CheckForFunctionRedefinition(FunctionDecl *FD, SkipBody->ShouldSkip = true; if (auto *TD = Definition->getDescribedFunctionTemplate()) makeMergedDefinitionVisible(TD, FD->getLocation()); - makeMergedDefinitionVisible(const_cast(Definition), - FD->getLocation()); + else + makeMergedDefinitionVisible(const_cast(Definition), + FD->getLocation()); return; } diff --git a/lib/Sema/SemaTemplate.cpp b/lib/Sema/SemaTemplate.cpp index 6241f524af..ede1c5bcc6 100644 --- a/lib/Sema/SemaTemplate.cpp +++ b/lib/Sema/SemaTemplate.cpp @@ -487,6 +487,8 @@ bool Sema::DiagnoseUninstantiableTemplate(SourceLocation PointOfInstantiation, QualType InstantiationTy; if (TagDecl *TD = dyn_cast(Instantiation)) InstantiationTy = Context.getTypeDeclType(TD); + else + InstantiationTy = cast(Instantiation)->getType(); if (!Complain || (PatternDef && PatternDef->isInvalidDecl())) { // Say nothing } else if (PatternDef) { @@ -498,30 +500,15 @@ bool Sema::DiagnoseUninstantiableTemplate(SourceLocation PointOfInstantiation, // we're lexically inside it. Instantiation->setInvalidDecl(); } else if (InstantiatedFromMember) { - if (isa(Instantiation)) { - Diag(PointOfInstantiation, - diag::err_explicit_instantiation_undefined_member) - << 1 << Instantiation->getDeclName() << Instantiation->getDeclContext(); - } else { - Diag(PointOfInstantiation, - diag::err_implicit_instantiate_member_undefined) - << InstantiationTy; - } - Diag(Pattern->getLocation(), isa(Instantiation) - ? diag::note_explicit_instantiation_here - : diag::note_member_declared_at); + Diag(PointOfInstantiation, + diag::err_implicit_instantiate_member_undefined) + << InstantiationTy; + Diag(Pattern->getLocation(), diag::note_member_declared_at); } else { - if (isa(Instantiation)) - Diag(PointOfInstantiation, - diag::err_explicit_instantiation_undefined_func_template) - << Pattern; - else - Diag(PointOfInstantiation, diag::err_template_instantiate_undefined) - << (TSK != TSK_ImplicitInstantiation) - << InstantiationTy; - Diag(Pattern->getLocation(), isa(Instantiation) - ? diag::note_explicit_instantiation_here - : diag::note_template_decl_here); + Diag(PointOfInstantiation, diag::err_template_instantiate_undefined) + << (TSK != TSK_ImplicitInstantiation) + << InstantiationTy; + Diag(Pattern->getLocation(), diag::note_template_decl_here); } // In general, Instantiation isn't marked invalid to get more than one diff --git a/lib/Sema/SemaTemplateInstantiateDecl.cpp b/lib/Sema/SemaTemplateInstantiateDecl.cpp index 75d7f70a63..3f4a0f6f39 100644 --- a/lib/Sema/SemaTemplateInstantiateDecl.cpp +++ b/lib/Sema/SemaTemplateInstantiateDecl.cpp @@ -3554,38 +3554,23 @@ void Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation, const FunctionDecl *PatternDecl = Function->getTemplateInstantiationPattern(); assert(PatternDecl && "instantiating a non-template"); - const FunctionDecl *PatternDef = PatternDecl->getDefinition(); - Stmt *Pattern = PatternDef->getBody(PatternDef); - if (PatternDef) - PatternDecl = PatternDef; + Stmt *Pattern = PatternDecl->getBody(PatternDecl); + assert(PatternDecl && "template definition is not a template"); + if (!Pattern) { + // Try to find a defaulted definition + PatternDecl->isDefined(PatternDecl); + } + assert(PatternDecl && "template definition is not a template"); // FIXME: We need to track the instantiation stack in order to know which // definitions should be visible within this instantiation. if (DiagnoseUninstantiableTemplate(PointOfInstantiation, Function, Function->getInstantiatedFromMemberFunction(), - PatternDecl, PatternDef, TSK, - /*Complain*/DefinitionRequired)) { - if (DefinitionRequired) - Function->setInvalidDecl(); - else if (TSK == TSK_ExplicitInstantiationDefinition) { - // Try again at the end of the translation unit (at which point a - // definition will be required). - assert(!Recursive); - PendingInstantiations.push_back( - std::make_pair(Function, PointOfInstantiation)); - } else if (TSK == TSK_ImplicitInstantiation) { - if (AtEndOfTU && !getDiagnostics().hasErrorOccurred()) { - Diag(PointOfInstantiation, diag::warn_func_template_missing) - << Function; - Diag(PatternDecl->getLocation(), diag::note_forward_template_decl); - if (getLangOpts().CPlusPlus11) - Diag(PointOfInstantiation, diag::note_inst_declaration_hint) - << Function; - } - } + PatternDecl, PatternDecl, TSK, + /*Complain*/DefinitionRequired)) + return; + - return; - } // Postpone late parsed template instantiations. if (PatternDecl->isLateTemplateParsed() && @@ -3619,9 +3604,40 @@ void Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation, Pattern = PatternDecl->getBody(PatternDecl); } - // Note, we should never try to instantiate a deleted function template. - assert((Pattern || PatternDecl->isDefaulted()) && - "unexpected kind of function template definition"); + // FIXME: Check if we could sink these diagnostics in + // DiagnoseUninstantiableTemplate. + if (!Pattern && !PatternDecl->isDefaulted()) { + if (DefinitionRequired) { + if (Function->getPrimaryTemplate()) + Diag(PointOfInstantiation, + diag::err_explicit_instantiation_undefined_func_template) + << Function->getPrimaryTemplate(); + else + Diag(PointOfInstantiation, + diag::err_explicit_instantiation_undefined_member) + << 1 << Function->getDeclName() << Function->getDeclContext(); + + if (PatternDecl) + Diag(PatternDecl->getLocation(), + diag::note_explicit_instantiation_here); + Function->setInvalidDecl(); + } else if (TSK == TSK_ExplicitInstantiationDefinition) { + assert(!Recursive); + PendingInstantiations.push_back( + std::make_pair(Function, PointOfInstantiation)); + } else if (TSK == TSK_ImplicitInstantiation) { + if (AtEndOfTU && !getDiagnostics().hasErrorOccurred()) { + Diag(PointOfInstantiation, diag::warn_func_template_missing) + << Function; + Diag(PatternDecl->getLocation(), diag::note_forward_template_decl); + if (getLangOpts().CPlusPlus11) + Diag(PointOfInstantiation, diag::note_inst_declaration_hint) + << Function; + } + } + + return; + } // C++1y [temp.explicit]p10: // Except for inline functions, declarations with types deduced from their diff --git a/lib/Sema/SemaType.cpp b/lib/Sema/SemaType.cpp index 8a49f6120c..091a4e34e1 100644 --- a/lib/Sema/SemaType.cpp +++ b/lib/Sema/SemaType.cpp @@ -6890,10 +6890,6 @@ bool Sema::hasVisibleDefinition(NamedDecl *D, NamedDecl **Suggested, return false; } D = ED->getDefinition(); - } else if (auto *FD = dyn_cast(D)) { - if (auto *Pattern = FD->getTemplateInstantiationPattern()) - FD = Pattern; - D = FD->getDefinition(); } assert(D && "missing definition for pattern of instantiated definition"); @@ -6901,7 +6897,7 @@ bool Sema::hasVisibleDefinition(NamedDecl *D, NamedDecl **Suggested, if (isVisible(D)) return true; - // The external source may have additional definitions of this entity that are + // The external source may have additional definitions of this type that are // visible, so complete the redeclaration chain now and ask again. if (auto *Source = Context.getExternalSource()) { Source->CompleteRedeclChain(D); diff --git a/test/Modules/Inputs/merge-template-pattern-visibility/a.h b/test/Modules/Inputs/merge-template-pattern-visibility/a.h index e659202761..7f9b6497e7 100644 --- a/test/Modules/Inputs/merge-template-pattern-visibility/a.h +++ b/test/Modules/Inputs/merge-template-pattern-visibility/a.h @@ -3,4 +3,3 @@ template struct B; template struct A {}; template struct B : A {}; -template inline auto C(T) {} diff --git a/test/Modules/Inputs/merge-template-pattern-visibility/b.h b/test/Modules/Inputs/merge-template-pattern-visibility/b.h index 6db3c2c6c9..5ed18e7e7c 100644 --- a/test/Modules/Inputs/merge-template-pattern-visibility/b.h +++ b/test/Modules/Inputs/merge-template-pattern-visibility/b.h @@ -3,9 +3,7 @@ template struct B; template struct A {}; template struct B : A {}; -template inline auto C(T) {} inline void f() { B bi; - C(0); } diff --git a/test/Modules/merge-template-pattern-visibility.cpp b/test/Modules/merge-template-pattern-visibility.cpp index b97f9f113e..db759b5a46 100644 --- a/test/Modules/merge-template-pattern-visibility.cpp +++ b/test/Modules/merge-template-pattern-visibility.cpp @@ -1,4 +1,4 @@ // RUN: rm -rf %t -// RUN: %clang_cc1 -fmodules -fno-modules-error-recovery -std=c++14 \ +// RUN: %clang_cc1 -fmodules -fmodules-cache-path=%t -fno-modules-error-recovery \ // RUN: -fmodule-name=X -emit-module %S/Inputs/merge-template-pattern-visibility/module.modulemap -x c++ \ -// RUN: -fmodules-local-submodule-visibility -o %t/X.pcm +// RUN: -fmodules-local-submodule-visibility