Add an attribute to forbid temporary instances of a type. This allows class

authors to write 

  class __attribute__((forbid_temporaries)) Name { ... };

when they want to force users to name all variables of the type. This protects
people from doing things like creating a scoped_lock that only lives for a
single statement instead of an entire scope.

The warning produced by this attribute can be disabled by
-Wno-forbid-temporaries.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124217 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/Sema/AttributeList.cpp b/lib/Sema/AttributeList.cpp
index 77d962542b..c3efda9a7a 100644
--- a/lib/Sema/AttributeList.cpp
+++ b/lib/Sema/AttributeList.cpp
@@ -85,6 +85,7 @@ AttributeList::Kind AttributeList::getKind(const IdentifierInfo *Name) {
     .Case("deprecated", AT_deprecated)
     .Case("visibility", AT_visibility)
     .Case("destructor", AT_destructor)
+    .Case("forbid_temporaries", AT_forbid_temporaries)
     .Case("format_arg", AT_format_arg)
     .Case("gnu_inline", AT_gnu_inline)
     .Case("weak_import", AT_weak_import)