clang-format: Support labels in brace-less ifs.

While I am not personally convinced about the usefulness of this
construct, we should break it.

Before:
  if (a) label:
  f();

After:
  if (a)
  label:
    f();

llvm-svn: 265545

1 files changed, 6 insertions, 0 deletions

diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 723e05f224d..55fd5fba4aa 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -301,6 +301,12 @@ TEST_F(FormatTest, FormatIfWithoutCompoundStatement) {
                "  // comment\n"
                "  f();",
                AllowsMergedIf);
+  verifyFormat("{\n"
+               "  if (a)\n"
+               "  label:\n"
+               "    f();\n"
+               "}",
+               AllowsMergedIf);
   verifyFormat("if (a)\n"
                "  ;",
                AllowsMergedIf);