Add a new attribute on records, __attribute__((adl_invisible)), and define

the x86-64 __va_list_tag with this attribute.  The attribute causes the
affected type to behave like a fundamental type when considered by ADL.

(x86-64 is the only target we currently provide with a struct-based
__builtin_va_list)

Fixes PR6762.

llvm-svn: 104941

2 files changed, 2 insertions, 0 deletions

diff --git a/clang/lib/Frontend/PCHReaderDecl.cpp b/clang/lib/Frontend/PCHReaderDecl.cpp
index 1ef0441ebf6..8af146d676c 100644
--- a/clang/lib/Frontend/PCHReaderDecl.cpp
+++ b/clang/lib/Frontend/PCHReaderDecl.cpp
@@ -171,6 +171,7 @@ void PCHDeclReader::VisitRecordDecl(RecordDecl *RD) {
   RD->setHasFlexibleArrayMember(Record[Idx++]);
   RD->setAnonymousStructOrUnion(Record[Idx++]);
   RD->setHasObjectMember(Record[Idx++]);
+  RD->setInvisibleToADL(Record[Idx++]);
 }
 
 void PCHDeclReader::VisitValueDecl(ValueDecl *VD) {
diff --git a/clang/lib/Frontend/PCHWriterDecl.cpp b/clang/lib/Frontend/PCHWriterDecl.cpp
index cc58e8ee465..0ce7d8fcae5 100644
--- a/clang/lib/Frontend/PCHWriterDecl.cpp
+++ b/clang/lib/Frontend/PCHWriterDecl.cpp
@@ -169,6 +169,7 @@ void PCHDeclWriter::VisitRecordDecl(RecordDecl *D) {
   Record.push_back(D->hasFlexibleArrayMember());
   Record.push_back(D->isAnonymousStructOrUnion());
   Record.push_back(D->hasObjectMember());
+  Record.push_back(D->isInvisibleToADL());
   Code = pch::DECL_RECORD;
 }