[clang-format] Insert a space between new/delete and a C-style cast (#106175)

It doesn't make sense to remove the space between new/delete and a
C-style cast when SpaceBeforeParensOptions.AfterPlacementOperator is set
to false.

Fixes #105628.

Author: owenca

clang/lib/Format/TokenAnnotator.cpp

@@ -4732,7 +4732,9 @@ bool TokenAnnotator::spaceRequiredBetween(const AnnotatedLine &Line,
         Left.isOneOf(tok::kw_new, tok::kw_delete) &&
         Right.isNot(TT_OverloadedOperatorLParen) &&
         !(Line.MightBeFunctionDecl && Left.is(TT_FunctionDeclarationName))) {
-      return Style.SpaceBeforeParensOptions.AfterPlacementOperator;
+      const auto *RParen = Right.MatchingParen;
+      return Style.SpaceBeforeParensOptions.AfterPlacementOperator ||
+             (RParen && RParen->is(TT_CastRParen));
     }
     if (Line.Type == LT_ObjCDecl)
       return true;

clang/unittests/Format/FormatTest.cpp

@@ -11749,6 +11749,7 @@ TEST_F(FormatTest, UnderstandsNewAndDelete) {
                "};",
                AfterPlacementOperator);
   verifyFormat("void operator new(void *foo) ATTRIB;", AfterPlacementOperator);
+  verifyFormat("delete (int *)p;", AfterPlacementOperator);
 
   AfterPlacementOperator.SpaceBeforeParensOptions.AfterPlacementOperator =
       false;
@@ -11764,6 +11765,7 @@ TEST_F(FormatTest, UnderstandsNewAndDelete) {
                "};",
                AfterPlacementOperator);
   verifyFormat("void operator new(void *foo) ATTRIB;", AfterPlacementOperator);
+  verifyFormat("delete (int *)p;", AfterPlacementOperator);
 }
 
 TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {