[clang-format] Fix a bug in ContinuationIndenter (#78921)

Fixes #76991.

Author: owenca

clang/lib/Format/ContinuationIndenter.cpp

@@ -740,7 +740,8 @@ void ContinuationIndenter::addTokenOnCurrentLine(LineState &State, bool DryRun,
 
   if (!DryRun) {
     Whitespaces.replaceWhitespace(Current, /*Newlines=*/0, Spaces,
-                                  State.Column + Spaces + PPColumnCorrection);
+                                  State.Column + Spaces + PPColumnCorrection,
+                                  /*IsAligned=*/false, State.Line->InMacroBody);
   }
 
   // If "BreakBeforeInheritanceComma" mode, don't break within the inheritance

clang/lib/Format/WhitespaceManager.h

@@ -55,7 +55,7 @@ class WhitespaceManager {
   /// this replacement. It is needed for determining how \p Spaces is turned
   /// into tabs and spaces for some format styles.
   void replaceWhitespace(FormatToken &Tok, unsigned Newlines, unsigned Spaces,
-                         unsigned StartOfTokenColumn, bool isAligned = false,
+                         unsigned StartOfTokenColumn, bool IsAligned = false,
                          bool InPPDirective = false);
 
   /// Adds information about an unchangeable token's whitespace.

clang/unittests/Format/FormatTest.cpp

@@ -21215,6 +21215,13 @@ TEST_F(FormatTest, CatchAlignArrayOfStructuresLeftAlignment) {
                "});",
                Style);
 
+  Style.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
+  verifyFormat("#define FOO \\\n"
+               "  int foo[][2] = { \\\n"
+               "      {0, 1} \\\n"
+               "  };",
+               Style);
+
   Style.Cpp11BracedListStyle = false;
   verifyFormat("struct test demo[] = {\n"
                "  { 56, 23,    \"hello\" },\n"