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-rw-r--r--clang/lib/Sema/SemaDecl.cpp5
-rw-r--r--clang/lib/Sema/SemaTemplate.cpp33
-rw-r--r--clang/lib/Sema/SemaTemplateInstantiateDecl.cpp74
-rw-r--r--clang/lib/Sema/SemaType.cpp6
-rw-r--r--clang/test/Modules/Inputs/merge-template-pattern-visibility/a.h1
-rw-r--r--clang/test/Modules/Inputs/merge-template-pattern-visibility/b.h2
-rw-r--r--clang/test/Modules/merge-template-pattern-visibility.cpp4
7 files changed, 64 insertions, 61 deletions
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index ca4de55fb51..9122030e16d 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -11274,9 +11274,8 @@ Sema::CheckForFunctionRedefinition(FunctionDecl *FD,
SkipBody->ShouldSkip = true;
if (auto *TD = Definition->getDescribedFunctionTemplate())
makeMergedDefinitionVisible(TD, FD->getLocation());
- else
- makeMergedDefinitionVisible(const_cast<FunctionDecl*>(Definition),
- FD->getLocation());
+ makeMergedDefinitionVisible(const_cast<FunctionDecl*>(Definition),
+ FD->getLocation());
return;
}
diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
index ede1c5bcc64..6241f524af2 100644
--- a/clang/lib/Sema/SemaTemplate.cpp
+++ b/clang/lib/Sema/SemaTemplate.cpp
@@ -487,8 +487,6 @@ bool Sema::DiagnoseUninstantiableTemplate(SourceLocation PointOfInstantiation,
QualType InstantiationTy;
if (TagDecl *TD = dyn_cast<TagDecl>(Instantiation))
InstantiationTy = Context.getTypeDeclType(TD);
- else
- InstantiationTy = cast<FunctionDecl>(Instantiation)->getType();
if (!Complain || (PatternDef && PatternDef->isInvalidDecl())) {
// Say nothing
} else if (PatternDef) {
@@ -500,15 +498,30 @@ bool Sema::DiagnoseUninstantiableTemplate(SourceLocation PointOfInstantiation,
// we're lexically inside it.
Instantiation->setInvalidDecl();
} else if (InstantiatedFromMember) {
- Diag(PointOfInstantiation,
- diag::err_implicit_instantiate_member_undefined)
- << InstantiationTy;
- Diag(Pattern->getLocation(), diag::note_member_declared_at);
+ if (isa<FunctionDecl>(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<FunctionDecl>(Instantiation)
+ ? diag::note_explicit_instantiation_here
+ : diag::note_member_declared_at);
} else {
- Diag(PointOfInstantiation, diag::err_template_instantiate_undefined)
- << (TSK != TSK_ImplicitInstantiation)
- << InstantiationTy;
- Diag(Pattern->getLocation(), diag::note_template_decl_here);
+ if (isa<FunctionDecl>(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<FunctionDecl>(Instantiation)
+ ? diag::note_explicit_instantiation_here
+ : diag::note_template_decl_here);
}
// In general, Instantiation isn't marked invalid to get more than one
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 3f4a0f6f39a..75d7f70a636 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -3554,23 +3554,38 @@ void Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation,
const FunctionDecl *PatternDecl = Function->getTemplateInstantiationPattern();
assert(PatternDecl && "instantiating a non-template");
- 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");
+ const FunctionDecl *PatternDef = PatternDecl->getDefinition();
+ Stmt *Pattern = PatternDef->getBody(PatternDef);
+ if (PatternDef)
+ PatternDecl = PatternDef;
// 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, PatternDecl, TSK,
- /*Complain*/DefinitionRequired))
- return;
-
+ 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;
+ }
+ }
+ return;
+ }
// Postpone late parsed template instantiations.
if (PatternDecl->isLateTemplateParsed() &&
@@ -3604,40 +3619,9 @@ void Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation,
Pattern = PatternDecl->getBody(PatternDecl);
}
- // 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;
- }
+ // Note, we should never try to instantiate a deleted function template.
+ assert((Pattern || PatternDecl->isDefaulted()) &&
+ "unexpected kind of function template definition");
// C++1y [temp.explicit]p10:
// Except for inline functions, declarations with types deduced from their
diff --git a/clang/lib/Sema/SemaType.cpp b/clang/lib/Sema/SemaType.cpp
index 091a4e34e19..8a49f6120cf 100644
--- a/clang/lib/Sema/SemaType.cpp
+++ b/clang/lib/Sema/SemaType.cpp
@@ -6890,6 +6890,10 @@ bool Sema::hasVisibleDefinition(NamedDecl *D, NamedDecl **Suggested,
return false;
}
D = ED->getDefinition();
+ } else if (auto *FD = dyn_cast<FunctionDecl>(D)) {
+ if (auto *Pattern = FD->getTemplateInstantiationPattern())
+ FD = Pattern;
+ D = FD->getDefinition();
}
assert(D && "missing definition for pattern of instantiated definition");
@@ -6897,7 +6901,7 @@ bool Sema::hasVisibleDefinition(NamedDecl *D, NamedDecl **Suggested,
if (isVisible(D))
return true;
- // The external source may have additional definitions of this type that are
+ // The external source may have additional definitions of this entity that are
// visible, so complete the redeclaration chain now and ask again.
if (auto *Source = Context.getExternalSource()) {
Source->CompleteRedeclChain(D);
diff --git a/clang/test/Modules/Inputs/merge-template-pattern-visibility/a.h b/clang/test/Modules/Inputs/merge-template-pattern-visibility/a.h
index 7f9b6497e72..e6592027611 100644
--- a/clang/test/Modules/Inputs/merge-template-pattern-visibility/a.h
+++ b/clang/test/Modules/Inputs/merge-template-pattern-visibility/a.h
@@ -3,3 +3,4 @@ template<typename T> struct B;
template<typename, typename> struct A {};
template<typename T> struct B : A<T> {};
+template<typename T> inline auto C(T) {}
diff --git a/clang/test/Modules/Inputs/merge-template-pattern-visibility/b.h b/clang/test/Modules/Inputs/merge-template-pattern-visibility/b.h
index 5ed18e7e7c5..6db3c2c6c9f 100644
--- a/clang/test/Modules/Inputs/merge-template-pattern-visibility/b.h
+++ b/clang/test/Modules/Inputs/merge-template-pattern-visibility/b.h
@@ -3,7 +3,9 @@ template<typename T> struct B;
template<typename, typename> struct A {};
template<typename T> struct B : A<T> {};
+template<typename T> inline auto C(T) {}
inline void f() {
B<int> bi;
+ C(0);
}
diff --git a/clang/test/Modules/merge-template-pattern-visibility.cpp b/clang/test/Modules/merge-template-pattern-visibility.cpp
index db759b5a46a..b97f9f113e3 100644
--- a/clang/test/Modules/merge-template-pattern-visibility.cpp
+++ b/clang/test/Modules/merge-template-pattern-visibility.cpp
@@ -1,4 +1,4 @@
// RUN: rm -rf %t
-// RUN: %clang_cc1 -fmodules -fmodules-cache-path=%t -fno-modules-error-recovery \
+// RUN: %clang_cc1 -fmodules -fno-modules-error-recovery -std=c++14 \
// RUN: -fmodule-name=X -emit-module %S/Inputs/merge-template-pattern-visibility/module.modulemap -x c++ \
-// RUN: -fmodules-local-submodule-visibility
+// RUN: -fmodules-local-submodule-visibility -o %t/X.pcm
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