clang-format: fix formatting of ObjC @synchronized blocks

Summary:
The blocks used to be formatted using the "default" behavior, and would
thus be mistaken for function calls followed by blocks: this could lead
to unexpected inlining of the block and extra line-break before the
opening brace.

They are now formatted similarly to `@autoreleasepool` blocks, as
expected:

  @synchronized(self) {
      f();
  }

Reviewers: krasimir, djasper, klimek

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D43114

llvm-svn: 326191

1 files changed, 18 insertions, 0 deletions

diff --git a/clang/unittests/Format/FormatTestObjC.cpp b/clang/unittests/Format/FormatTestObjC.cpp
index 40dc375d576..d592b39a482 100644
--- a/clang/unittests/Format/FormatTestObjC.cpp
+++ b/clang/unittests/Format/FormatTestObjC.cpp
@@ -209,6 +209,24 @@ TEST_F(FormatTestObjC, FormatObjCGenerics) {
                "        aaaaaaaaaaaaaaaaa);\n");
 }
 
+TEST_F(FormatTestObjC, FormatObjCSynchronized) {
+  verifyFormat("@synchronized(self) {\n"
+               "  f();\n"
+               "}\n"
+               "@synchronized(self) {\n"
+               "  f();\n"
+               "}\n");
+  Style.BreakBeforeBraces = FormatStyle::BS_Allman;
+  verifyFormat("@synchronized(self)\n"
+               "{\n"
+               "  f();\n"
+               "}\n"
+               "@synchronized(self)\n"
+               "{\n"
+               "  f();\n"
+               "}\n");
+}
+
 TEST_F(FormatTestObjC, FormatObjCInterface) {
   verifyFormat("@interface Foo : NSObject <NSSomeDelegate> {\n"
                "@public\n"