[clang-format] Fix a bug in AnnotatingParser::rParenEndsCast() (#79549)

Fixes #78965.

Author: owenca

clang/lib/Format/TokenAnnotator.cpp

@@ -2488,6 +2488,8 @@ class AnnotatingParser {
         (Tok.Next->Next->is(tok::numeric_constant) || Line.InPPDirective)) {
       return false;
     }
+    if (Line.InPPDirective && Tok.Next->is(tok::minus))
+      return false;
     // Search for unexpected tokens.
     for (FormatToken *Prev = Tok.Previous; Prev != Tok.MatchingParen;
          Prev = Prev->Previous) {

clang/unittests/Format/TokenAnnotatorTest.cpp

@@ -611,6 +611,11 @@ TEST_F(TokenAnnotatorTest, UnderstandsCasts) {
   EXPECT_TOKEN(Tokens[13], tok::r_paren, TT_Unknown);
   EXPECT_TOKEN(Tokens[14], tok::star, TT_BinaryOperator);
 
+  Tokens = annotate("#define foo(i) ((i) - bar)");
+  ASSERT_EQ(Tokens.size(), 14u) << Tokens;
+  EXPECT_TOKEN(Tokens[9], tok::r_paren, TT_Unknown);
+  EXPECT_TOKEN(Tokens[10], tok::minus, TT_BinaryOperator);
+
   Tokens = annotate("return (Foo) & 10;");
   ASSERT_EQ(Tokens.size(), 8u) << Tokens;
   EXPECT_TOKEN(Tokens[3], tok::r_paren, TT_Unknown);