Fix crash caused by this:

void f() {
   int +; // crash here
}


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58846 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 5 insertions, 0 deletions

diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index 3e4e2c5b2c..fd94c80d8b 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -1639,6 +1639,10 @@ void Sema::AddInitializerToDecl(DeclTy *dcl, ExprTy *init) {
 void Sema::ActOnUninitializedDecl(DeclTy *dcl) {
   Decl *RealDecl = static_cast<Decl *>(dcl);
 
+  // If there is no declaration, there was an error parsing it. Just ignore it.
+  if (RealDecl == 0)
+    return;
+
   if (VarDecl *Var = dyn_cast<VarDecl>(RealDecl)) {
     QualType Type = Var->getType();
     // C++ [dcl.init.ref]p3:
diff --git a/test/Sema/init.c b/test/Sema/init.c
index a078a2a96b..c08500834f 100644
--- a/test/Sema/init.c
+++ b/test/Sema/init.c
@@ -16,6 +16,7 @@ int *h = &x;
 int test() {
 int a[10];
 int b[10] = a; // expected-error {{initialization with "{...}" expected}}
+int +; // expected-error {{expected identifier or '('}} expected-error {{declarator requires an identifier}} expected-error {{parse error}}
 }