Fix root cause

Author: XDeme1

clang/lib/Format/UnwrappedLineParser.cpp

@@ -2315,6 +2315,10 @@ bool UnwrappedLineParser::tryToParseLambdaIntroducer() {
     if (Next->is(tok::greater))
       return false;
   }
+  if (const auto Kind = FormatTok->Tok.getKind();
+      tok::isLiteral(Kind) && !tok::isStringLiteral(Kind)) {
+    return false;
+  }
   parseSquare(/*LambdaIntroducer=*/true);
   return true;
 }

clang/lib/Format/WhitespaceManager.cpp

@@ -1455,15 +1455,8 @@ WhitespaceManager::CellDescriptions WhitespaceManager::getCells(unsigned Start,
         if (!Cells.empty())
           Cells.back().EndIndex = i;
         Cells.push_back(CellDescription{i, ++Cell, i + 1, false, nullptr});
-        CellCounts.push_back(
-            C.Tok->Previous->isNot(tok::comma) &&
-                    // When dealing with C array designators. There is a
-                    // possibility of some nested array not having an `=`.
-                    // When this happens we make the cells non retangular,
-                    // avoiding an access out of bound later on.
-                    MatchingParen->MatchingParen->Previous->isNot(tok::equal)
-                ? Cell + 1
-                : Cell);
+        CellCounts.push_back(C.Tok->Previous->isNot(tok::comma) ? Cell + 1
+                                                                : Cell);
         // Go to the next non-comment and ensure there is a break in front
         const auto *NextNonComment = C.Tok->getNextNonComment();
         while (NextNonComment->is(tok::comma))

clang/unittests/Format/TokenAnnotatorTest.cpp

@@ -2324,6 +2324,11 @@ TEST_F(TokenAnnotatorTest, UnderstandDesignatedInitializers) {
   EXPECT_BRACE_KIND(Tokens[1], BK_BracedInit);
   EXPECT_TOKEN(Tokens[6], tok::period, TT_DesignatedInitializerPeriod);
   EXPECT_TOKEN(Tokens[13], tok::period, TT_DesignatedInitializerPeriod);
+
+  Tokens = annotate("Foo foo[] = {[0]{}};");
+  ASSERT_EQ(Tokens.size(), 14u) << Tokens;
+  EXPECT_TOKEN(Tokens[6], tok::l_square, TT_DesignatedInitializerLSquare);
+  EXPECT_BRACE_KIND(Tokens[9], BK_BracedInit);
 }
 
 TEST_F(TokenAnnotatorTest, UnderstandsJavaScript) {