Index: clang/docs/ReleaseNotes.rst
===================================================================
--- clang/docs/ReleaseNotes.rst
+++ clang/docs/ReleaseNotes.rst
@@ -371,6 +371,8 @@
   ``#pragma clang|GCC diagnostic push|pop`` directive.
   (`#13920: <https://github.com/llvm/llvm-project/issues/13920>`_)
 - Clang now does not try to analyze cast validity on variables with dependent alignment (`#63007: <https://github.com/llvm/llvm-project/issues/63007>`_).
+- ``-Wformat`` cast fix-its will now suggest ``static_cast`` instead of C-style casts
+  for C++ code.
 
 Bug Fixes in This Version
 -------------------------
Index: clang/lib/Sema/SemaChecking.cpp
===================================================================
--- clang/lib/Sema/SemaChecking.cpp
+++ clang/lib/Sema/SemaChecking.cpp
@@ -10822,9 +10822,9 @@
       // if necessary).
       SmallString<16> CastBuf;
       llvm::raw_svector_ostream CastFix(CastBuf);
-      CastFix << "(";
+      CastFix << (S.LangOpts.CPlusPlus ? "static_cast<" : "(");
       IntendedTy.print(CastFix, S.Context.getPrintingPolicy());
-      CastFix << ")";
+      CastFix << (S.LangOpts.CPlusPlus ? ">" : ")");
 
       SmallVector<FixItHint,4> Hints;
       if (!AT.matchesType(S.Context, IntendedTy) || ShouldNotPrintDirectly)
@@ -10835,7 +10835,7 @@
         SourceRange CastRange(CCast->getLParenLoc(), CCast->getRParenLoc());
         Hints.push_back(FixItHint::CreateReplacement(CastRange, CastFix.str()));
 
-      } else if (!requiresParensToAddCast(E)) {
+      } else if (!requiresParensToAddCast(E) && !S.LangOpts.CPlusPlus) {
         // If the expression has high enough precedence,
         // just write the C-style cast.
         Hints.push_back(
Index: clang/test/FixIt/format.mm
===================================================================
--- clang/test/FixIt/format.mm
+++ clang/test/FixIt/format.mm
@@ -9,22 +9,22 @@
 
   const wchar_t wchar_data = L'a';
   NSLog(@"%C", wchar_data);  // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'wchar_t'}}
-  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:16-[[@LINE-1]]:16}:"(unsigned short)"
+  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:16-[[@LINE-1]]:16}:"static_cast<unsigned short>(
 
   NSLog(@"%C", 0x260300);  // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'int'}}
   // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
-  // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unsigned short)"
+  // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"static_cast<unsigned short>(
 
   typedef unsigned short unichar;
 
   NSLog(@"%C", wchar_data);  // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'wchar_t'}}
-  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:16-[[@LINE-1]]:16}:"(unichar)"
+  // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:16-[[@LINE-1]]:16}:"static_cast<unichar>(
 
   NSLog(@"%C", 0x260300);  // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'int'}}
   // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%d"
-  // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)"
+  // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"static_cast<unichar>(
 
   NSLog(@"%C", 0.0); // expected-warning{{format specifies type 'unichar' (aka 'unsigned short') but the argument has type 'double'}}
   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:11-[[@LINE-1]]:13}:"%f"
-  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"(unichar)"
+  // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-2]]:16-[[@LINE-2]]:16}:"static_cast<unichar>(
 }