[clang-format] C# formatting a class with inheritance followed by an attribute specifier assume its a braces initializer

Summary:
https://bugs.llvm.org/show_bug.cgi?id=44340

The rule that prevents `... {} [[....]]`  being treated as a braced initializer for C++ causes problems for C# with attributes, causing it to be incorrectly classified and then messing up the subsequent formatting. (see bug for details of formatting)

Reviewers: mitchell-stellar, klimek, sammccall

Reviewed By: mitchell-stellar

Subscribers: cfe-commits

Tags: #clang-format, #clang

Differential Revision: https://reviews.llvm.org/D71769

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp
index 1e27eab1e74..ead6b474320 100644
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -466,7 +466,7 @@ void UnwrappedLineParser::calculateBraceTypes(bool ExpectClassBody) {
               (NextTok->is(tok::semi) &&
                (!ExpectClassBody || LBraceStack.size() != 1)) ||
               (NextTok->isBinaryOperator() && !NextIsObjCMethod);
-          if (NextTok->is(tok::l_square)) {
+          if (!Style.isCSharp() && NextTok->is(tok::l_square)) {
             // We can have an array subscript after a braced init
             // list, but C++11 attributes are expected after blocks.
             NextTok = Tokens->getNextToken();