clang-format: Fix indentation in multi-line placement new.

Before:
  auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =
      new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))
      typename aaaaaaaaaaaaaaaaaaaaaaaa();

After:
  auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =
      new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))
          typename aaaaaaaaaaaaaaaaaaaaaaaa();

llvm-svn: 214964

clang/lib/Format/ContinuationIndenter.cpp

@@ -561,6 +561,9 @@ unsigned ContinuationIndenter::getNewLineColumn(const LineState &State) {
     return State.FirstIndent + Style.ConstructorInitializerIndentWidth;
   if (NextNonComment->Type == TT_CtorInitializerComma)
     return State.Stack.back().Indent;
+  if (Previous.is(tok::r_paren) && !Current.isBinaryOperator() &&
+      Current.isNot(tok::colon))
+    return ContinuationIndent;
   if (State.Stack.back().Indent == State.FirstIndent && PreviousNonComment &&
       PreviousNonComment->isNot(tok::r_brace))
     // Ensure that we fall back to the continuation indent width instead of

clang/unittests/Format/FormatTest.cpp

@@ -4729,6 +4729,9 @@ TEST_F(FormatTest, UnderstandsNewAndDelete) {
                "}");
   verifyFormat("new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n"
                "    typename aaaaaaaaaaaaaaaaaaaaaaaa();");
+  verifyFormat("auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
+               "    new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n"
+               "        typename aaaaaaaaaaaaaaaaaaaaaaaa();");
 }
 
 TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {