[Sema] Produce diagnostics for attribute 'trivial_abi' that appears

after the closing brace of a class declaration.

Merge the two call sites of checkIllFormedTrivialABIStruct and sink it
into CheckCompletedCXXClass so that it is called after the attribute has
been attached to the CXXRecordDecl.

rdar://problem/40873297

llvm-svn: 335021

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/test/SemaObjCXX/attr-trivial-abi.mm b/clang/test/SemaObjCXX/attr-trivial-abi.mm
index c83a94dcd98..fe8baee473e 100644
--- a/clang/test/SemaObjCXX/attr-trivial-abi.mm
+++ b/clang/test/SemaObjCXX/attr-trivial-abi.mm
@@ -18,6 +18,10 @@ struct __attribute__((trivial_abi)) S3 { // expected-warning {{'trivial_abi' can
   virtual void m();
 };
 
+struct S3_2 {
+  virtual void m();
+} __attribute__((trivial_abi)); // expected-warning {{'trivial_abi' cannot be applied to 'S3_2'}}
+
 struct S4 {
   int a;
 };