[PATCH] [PATCH] Fix to PR15826 - clang hits assert in clang::ASTContext::getASTRecordLayout

[Serge Pavlov]

  Added testcase.

Hi doug.gregor,

http://llvm-reviews.chandlerc.com/D749

CHANGE SINCE LAST DIFF
  http://llvm-reviews.chandlerc.com/D749?vs=1841&id=1846#toc

Files:
  lib/Sema/SemaDecl.cpp
  test/Sema/PR15826.c

Index: lib/Sema/SemaDecl.cpp
===================================================================
--- lib/Sema/SemaDecl.cpp
+++ lib/Sema/SemaDecl.cpp
@@ -10295,7 +10295,8 @@
     Tag->setTopLevelDeclInObjCContainer();
 
   // Notify the consumer that we've defined a tag.
-  Consumer.HandleTagDeclDefinition(Tag);
+  if (!Tag->isInvalidDecl())
+    Consumer.HandleTagDeclDefinition(Tag);
 }
 
 void Sema::ActOnObjCContainerFinishDefinition() {
Index: test/Sema/PR15826.c
===================================================================
--- /dev/null
+++ test/Sema/PR15826.c
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -verify -emit-obj -ffreestanding %s
+
+/* Testcase for PR15826 - clang hits assert in clang::ASTContext::getASTRecordLayout */
+struct sysctl_req {
+  struct aiocblist *p_aio;
+};
+
+struct sysctl_oid {
+  int (*oid_handler)(struct sysctl_req *req);
+};
+
+static struct sysctl_oid sysctl___kern_features_aio;
+
+static void const *const __set_sysctl_set_sym_sysctl___kern_features_aio
+    __attribute__((__used__)) = &sysctl___kern_features_aio;
+
+struct aiocblist {
+  struct aiocb uaiocb; // expected-error {{field has incomplete type}} expected-note {{forward declaration}}
+};
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