[llvm-branch-commits] [clang] PR for llvm/llvm-project#79549 (PR #80591)

[via llvm-branch-commits]

https://github.com/llvmbot created https://github.com/llvm/llvm-project/pull/80591

resolves llvm/llvm-project#79549

>From 2dadc402022f69908ff047a194a8a91a3f33dab2 Mon Sep 17 00:00:00 2001
From: Owen Pan <owenpiano at gmail.com>
Date: Fri, 26 Jan 2024 18:32:03 -0800
Subject: [PATCH] [clang-format] Fix a bug in
 AnnotatingParser::rParenEndsCast() (#79549)

Fixes #78965.

(cherry picked from commit f826f55b2ab68c2515fae751dc2d6ef77f37b172)
---
 clang/lib/Format/TokenAnnotator.cpp           | 2 ++
 clang/unittests/Format/TokenAnnotatorTest.cpp | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 25fcceb878643..df1c5bc19de1e 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/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) {
diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp
index 3dbf504c35ed5..67678c18963b1 100644
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/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);