owenpan created this revision.
owenpan added reviewers: MyDeveloperDay, curdeius, HazardyKnusperkeks.
owenpan added a project: clang-format.
Herald added a project: All.
owenpan requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Related to #54513 <https://github.com/llvm/llvm-project/issues/54513>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122756

Files:
  clang/lib/Format/QualifierAlignmentFixer.cpp
  clang/unittests/Format/QualifierFixerTest.cpp


Index: clang/unittests/Format/QualifierFixerTest.cpp
===================================================================
--- clang/unittests/Format/QualifierFixerTest.cpp
+++ clang/unittests/Format/QualifierFixerTest.cpp
@@ -816,6 +816,7 @@
   EXPECT_EQ(ReplacementCount, 0);
   verifyFormat("static const uint32 foo[] = {0, 31};", Style);
   verifyFormat("#define MACRO static const", Style);
+  verifyFormat("using sc = static const", Style);
   EXPECT_EQ(ReplacementCount, 0);
 }
 
Index: clang/lib/Format/QualifierAlignmentFixer.cpp
===================================================================
--- clang/lib/Format/QualifierAlignmentFixer.cpp
+++ clang/lib/Format/QualifierAlignmentFixer.cpp
@@ -303,6 +303,8 @@
 
   if (LastQual && Qual != LastQual && Qual->is(QualifierType)) {
     rotateTokens(SourceMgr, Fixes, Tok, Qual, /*Left=*/true);
+    if (!Qual->Next)
+      return Tok;
     Tok = Qual->Next;
   } else if (Tok->startsSequence(tok::identifier, QualifierType)) {
     if (Tok->Next->Next && Tok->Next->Next->isOneOf(tok::identifier, tok::star,


Index: clang/unittests/Format/QualifierFixerTest.cpp
===================================================================
--- clang/unittests/Format/QualifierFixerTest.cpp
+++ clang/unittests/Format/QualifierFixerTest.cpp
@@ -816,6 +816,7 @@
   EXPECT_EQ(ReplacementCount, 0);
   verifyFormat("static const uint32 foo[] = {0, 31};", Style);
   verifyFormat("#define MACRO static const", Style);
+  verifyFormat("using sc = static const", Style);
   EXPECT_EQ(ReplacementCount, 0);
 }
 
Index: clang/lib/Format/QualifierAlignmentFixer.cpp
===================================================================
--- clang/lib/Format/QualifierAlignmentFixer.cpp
+++ clang/lib/Format/QualifierAlignmentFixer.cpp
@@ -303,6 +303,8 @@
 
   if (LastQual && Qual != LastQual && Qual->is(QualifierType)) {
     rotateTokens(SourceMgr, Fixes, Tok, Qual, /*Left=*/true);
+    if (!Qual->Next)
+      return Tok;
     Tok = Qual->Next;
   } else if (Tok->startsSequence(tok::identifier, QualifierType)) {
     if (Tok->Next->Next && Tok->Next->Next->isOneOf(tok::identifier, tok::star,
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