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| author | Eli Friedman <eli.friedman@gmail.com> | 2009-08-15 21:55:26 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2009-08-15 21:55:26 +0000 |
| commit | 1d954f6a0057cb55a3a5d483904a3c57d03c996f (patch) | |
| tree | fc688c5f08a0ec8903efd68c70b6f81349a9e061 /lib/AST/ExprCXX.cpp | |
| parent | 0d9a279e9ebac8d99267a4dce645186e0b72816e (diff) | |
Implement __is_empty. Patch by Sean Hunt.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79143 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AST/ExprCXX.cpp')
| -rw-r--r-- | lib/AST/ExprCXX.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/AST/ExprCXX.cpp b/lib/AST/ExprCXX.cpp index 454dc14b6c..006f69890a 100644 --- a/lib/AST/ExprCXX.cpp +++ b/lib/AST/ExprCXX.cpp @@ -223,6 +223,12 @@ bool UnaryTypeTraitExpr::EvaluateTrait(ASTContext& C) const { if (const RecordType *RT = QueriedType->getAs<RecordType>()) return cast<CXXRecordDecl>(RT->getDecl())->isAbstract(); return false; + case UTT_IsEmpty: + if (const RecordType *Record = QueriedType->getAs<RecordType>()) { + return !Record->getDecl()->isUnion() + && cast<CXXRecordDecl>(Record->getDecl())->isEmpty(); + } + return false; case UTT_HasTrivialConstructor: // http://gcc.gnu.org/onlinedocs/gcc/Type-Traits.html: // If __is_pod (type) is true then the trait is true, else if type is |