diff --git a/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp b/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp
--- a/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp
+++ b/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp
@@ -52,6 +52,11 @@
       if (!isVisible(ND))
         return true;
 
+      if (const VarDecl *VD = dyn_cast<VarDecl>(ND))
+        if (const auto *Parent = VD->getParentFunctionOrMethod())
+          if (const auto *BD = dyn_cast_or_null<BlockDecl>(Parent))
+            return true;
+
       if (const VarDecl *VD = dyn_cast<VarDecl>(ND))
         if ((VD->getStorageClass() == StorageClass::SC_Extern) ||
             (VD->getStorageClass() == StorageClass::SC_Static &&
diff --git a/clang/test/InterfaceStubs/blocks.c b/clang/test/InterfaceStubs/blocks.c
new file mode 100644
--- /dev/null
+++ b/clang/test/InterfaceStubs/blocks.c
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -emit-interface-stubs -fblocks -o - %s | FileCheck %s
+
+// CHECK: --- !experimental-ifs-v1
+// CHECK-NEXT: IfsVersion: 1.0
+// CHECK-NEXT: Triple:
+// CHECK-NEXT: ObjectFileFormat: ELF
+// CHECK-NEXT: Symbols:
+// CHECK-NEXT: ...
+static void (^f)(void*) = ^(void* data) { int i; };