[PATCH] D116920: [clang-format] clang-format eats space in front of attributes for operator delete

[MyDeveloperDay via Phabricator via cfe-commits]

MyDeveloperDay created this revision.
MyDeveloperDay added reviewers: curdeius, HazardyKnusperkeks, owenpan, thakis.
MyDeveloperDay added projects: clang, clang-format.
MyDeveloperDay requested review of this revision.

https://github.com/llvm/llvm-project/issues/27037

Sorry its taken so long to get to this issue! (got it before it hit its 6th birthday!)

  void operator delete(void *foo)ATTRIB;

(void *foo) is incorrectly determined to be a C-Style Cast resulting in the space being removed after the ) and before the attrib, due to the detection of

  delete (A* )a;

The following was previously unaffected

  void operator new(void *foo) ATTRIB;

Fixes #27037


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D116920

Files:
  clang/lib/Format/TokenAnnotator.cpp
  clang/unittests/Format/FormatTest.cpp


Index: clang/unittests/Format/FormatTest.cpp
===================================================================
--- clang/unittests/Format/FormatTest.cpp
+++ clang/unittests/Format/FormatTest.cpp
@@ -9459,6 +9459,9 @@
                "    new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n"
                "        typename aaaaaaaaaaaaaaaaaaaaaaaa();");
   verifyFormat("delete[] h->p;");
+
+  verifyFormat("void operator delete(void *foo) ATTRIB;");
+  verifyFormat("void operator new(void *foo) ATTRIB;");
 }
 
 TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {
Index: clang/lib/Format/TokenAnnotator.cpp
===================================================================
--- clang/lib/Format/TokenAnnotator.cpp
+++ clang/lib/Format/TokenAnnotator.cpp
@@ -1893,6 +1893,14 @@
         LeftOfParens = LeftOfParens->MatchingParen->Previous;
       }
 
+      // The Condition directly below this one will see the operator arguments
+      // as a (void *foo) cast.
+      //   void operator delete(void *foo) ATTRIB;
+      if (LeftOfParens->Tok.getIdentifierInfo() &&
+          LeftOfParens->is(tok::kw_delete) && LeftOfParens->Previous &&
+          LeftOfParens->Previous->is(tok::kw_operator))
+        return false;
+
       // If there is an identifier (or with a few exceptions a keyword) right
       // before the parentheses, this is unlikely to be a cast.
       if (LeftOfParens->Tok.getIdentifierInfo() &&


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