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Never try to instantiate a deduction guide's "definition". Fixes bogus warning when there inevitably isn't one. 

llvm-svn: 316820
This commit is contained in:
Richard Smith 2017-10-28 01:15:00 +00:00
parent 49687104d6
commit cb18957da0
2 changed files with 4 additions and 3 deletions
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3
clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
View File

@ -3768,7 +3768,8 @@ void Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation,
bool Recursive,
bool DefinitionRequired,
bool AtEndOfTU) {
if (Function->isInvalidDecl() || Function->isDefined())
if (Function->isInvalidDecl() || Function->isDefined() ||
isa<CXXDeductionGuideDecl>(Function))
return;
// Never instantiate an explicit specialization except if it is a class scope

4
clang/test/SemaCXX/cxx1z-class-template-argument-deduction.cpp
View File

@ -1,5 +1,5 @@
// RUN: %clang_cc1 -std=c++1z -verify %s -DERRORS
// RUN: %clang_cc1 -std=c++1z -verify %s -UERRORS
// RUN: %clang_cc1 -std=c++1z -verify %s -DERRORS -Wundefined-func-template
// RUN: %clang_cc1 -std=c++1z -verify %s -UERRORS -Wundefined-func-template
// This test is split into two because we only produce "undefined internal"
// warnings if we didn't produce any errors.