clang-format: Improve binary operator detection.

Before:
  *(int *)(p &~3UL) = 0;

After:
  *(int *)(p & ~3UL) = 0;

This fixes llvm.org/PR19464.

llvm-svn: 207405

2 files changed, 2 insertions, 1 deletions

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 54961218a2d..843d8777188 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -682,7 +682,7 @@ private:
       for (FormatToken *Previous = Current.Previous;
            Previous && !Previous->isOneOf(tok::comma, tok::semi);
            Previous = Previous->Previous) {
-        if (Previous->is(tok::r_square))
+        if (Previous->isOneOf(tok::r_square, tok::r_paren))
           Previous = Previous->MatchingParen;
         if (Previous->Type == TT_BinaryOperator &&
             Previous->isOneOf(tok::star, tok::amp)) {
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index c006c399f38..084d1dd33d8 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -4523,6 +4523,7 @@ TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {
   verifyIndependentOfContext("a * [self dostuff];");
   verifyIndependentOfContext("int x = a * (a + b);");
   verifyIndependentOfContext("(a *)(a + b);");
+  verifyIndependentOfContext("*(int *)(p & ~3UL) = 0;");
   verifyIndependentOfContext("int *pa = (int *)&a;");
   verifyIndependentOfContext("return sizeof(int **);");
   verifyIndependentOfContext("return sizeof(int ******);");