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authorDouglas Gregor <dgregor@apple.com>2009-07-29 23:36:44 +0000
committerDouglas Gregor <dgregor@apple.com>2009-07-29 23:36:44 +0000
commit8e9e9ef5348bce1a8f0741a5684fac3de9701c28 (patch)
treeda4ef264be5202213f0470cd5c9fa42dcf654fa6 /lib/Frontend/PCHWriterDecl.cpp
parent5266d2ed446e9588eb00579ddfc5a2d327a5b3ab (diff)
Make tag declarations redeclarable. This change has three purposes:
1) Allow the Index library (and any other interested client) to walk the set of declarations for a given tag (enum, union, class, whatever). At the moment, this information is not readily available. 2) Reduce our dependence on TagDecl::TypeForDecl being mapped down to a TagType (for which getDecl() will return the tag definition, if one exists). This property won't exist for class template partial specializations. 3) Make the canonical declaration of a TagDecl actually canonical, e.g., so that it does not change when the tag is defined. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77523 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Frontend/PCHWriterDecl.cpp')
-rw-r--r--lib/Frontend/PCHWriterDecl.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Frontend/PCHWriterDecl.cpp b/lib/Frontend/PCHWriterDecl.cpp
index 4239798ac8..fd7ea421dd 100644
--- a/lib/Frontend/PCHWriterDecl.cpp
+++ b/lib/Frontend/PCHWriterDecl.cpp
@@ -109,6 +109,7 @@ void PCHDeclWriter::VisitTypedefDecl(TypedefDecl *D) {
void PCHDeclWriter::VisitTagDecl(TagDecl *D) {
VisitTypeDecl(D);
+ Writer.AddDeclRef(D->getPreviousDeclaration(), Record);
Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding
Record.push_back(D->isDefinition());
Writer.AddDeclRef(D->getTypedefForAnonDecl(), Record);