When value-initializing a class with no user-defined constructors but

with a non-trivial default constructor, zero-initialize the storage
and then call the default constructor. Fixes PR5800.

llvm-svn: 91548

2 files changed, 2 insertions, 0 deletions

diff --git a/clang/lib/Frontend/PCHReaderStmt.cpp b/clang/lib/Frontend/PCHReaderStmt.cpp
index 6c3cbca2159..ba82d260102 100644
--- a/clang/lib/Frontend/PCHReaderStmt.cpp
+++ b/clang/lib/Frontend/PCHReaderStmt.cpp
@@ -860,6 +860,7 @@ unsigned PCHStmtReader::VisitCXXConstructExpr(CXXConstructExpr *E) {
   E->setConstructor(cast<CXXConstructorDecl>(Reader.GetDecl(Record[Idx++])));
   E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
   E->setElidable(Record[Idx++]);  
+  E->setRequiresZeroInitialization(Record[Idx++]);
   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
     E->setArg(I, cast<Expr>(StmtStack[StmtStack.size() - N + I]));
   return E->getNumArgs();
diff --git a/clang/lib/Frontend/PCHWriterStmt.cpp b/clang/lib/Frontend/PCHWriterStmt.cpp
index bf1d06f9ced..abf4eaa0f8a 100644
--- a/clang/lib/Frontend/PCHWriterStmt.cpp
+++ b/clang/lib/Frontend/PCHWriterStmt.cpp
@@ -787,6 +787,7 @@ void PCHStmtWriter::VisitCXXConstructExpr(CXXConstructExpr *E) {
   Writer.AddDeclRef(E->getConstructor(), Record);
   Writer.AddSourceLocation(E->getLocation(), Record);
   Record.push_back(E->isElidable());
+  Record.push_back(E->requiresZeroInitialization());
   Record.push_back(E->getNumArgs());
   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
     Writer.WriteSubStmt(E->getArg(I));