clang-format: Don't allow labels when expecting declarations.

This fixes formatting unnamed bitfields (llvm.org/PR21999).

Before:
  struct MyStruct {
    uchar data;
  uchar:
    8;
  uchar:
    8;
    uchar other;
  };

After:
  struct MyStruct {
    uchar data;
    uchar : 8;
    uchar : 8;
    uchar other;
  };

llvm-svn: 234318

1 files changed, 10 insertions, 2 deletions

diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 183fa4418be..16062dd40b7 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -812,9 +812,11 @@ TEST_F(FormatTest, FormatsLabels) {
                "    some_more_code();\n"
                "  }\n"
                "}");
-  verifyFormat("some_code();\n"
+  verifyFormat("{\n"
+               "  some_code();\n"
                "test_label:\n"
-               "some_other_code();");
+               "  some_other_code();\n"
+               "}");
 }
 
 //===----------------------------------------------------------------------===//
@@ -2143,6 +2145,12 @@ TEST_F(FormatTest, FormatsBitfields) {
                "  int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa : 1,\n"
                "      bbbbbbbbbbbbbbbbbbbbbbbbb;\n"
                "};");
+  verifyFormat("struct MyStruct {\n"
+               "  uchar data;\n"
+               "  uchar : 8;\n"
+               "  uchar : 8;\n"
+               "  uchar other;\n"
+               "};");
 }
 
 TEST_F(FormatTest, FormatsNamespaces) {