From 145449b1e420787bb99721a429341fa6be3adfb6 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sun, 3 Jul 2022 16:10:23 +0200
Subject: Vendor import of llvm-project main
 llvmorg-15-init-15358-g53dc0f107877.

---
 clang/lib/AST/DeclPrinter.cpp | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

(limited to 'clang/lib/AST/DeclPrinter.cpp')

diff --git a/clang/lib/AST/DeclPrinter.cpp b/clang/lib/AST/DeclPrinter.cpp
index c3f1d1544f79..c6a392c9c01b 100644
--- a/clang/lib/AST/DeclPrinter.cpp
+++ b/clang/lib/AST/DeclPrinter.cpp
@@ -680,6 +680,10 @@ void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
       if (FT->isVariadic()) {
         if (D->getNumParams()) POut << ", ";
         POut << "...";
+      } else if (!D->getNumParams() && !Context.getLangOpts().CPlusPlus) {
+        // The function has a prototype, so it needs to retain the prototype
+        // in C.
+        POut << "void";
       }
     } else if (D->doesThisDeclarationHaveABody() && !D->hasPrototype()) {
       for (unsigned i = 0, e = D->getNumParams(); i != e; ++i) {
@@ -891,12 +895,15 @@ void DeclPrinter::VisitVarDecl(VarDecl *D) {
   Expr *Init = D->getInit();
   if (!Policy.SuppressInitializers && Init) {
     bool ImplicitInit = false;
-    if (CXXConstructExpr *Construct =
-            dyn_cast<CXXConstructExpr>(Init->IgnoreImplicit())) {
+    if (D->isCXXForRangeDecl()) {
+      // FIXME: We should print the range expression instead.
+      ImplicitInit = true;
+    } else if (CXXConstructExpr *Construct =
+                   dyn_cast<CXXConstructExpr>(Init->IgnoreImplicit())) {
       if (D->getInitStyle() == VarDecl::CallInit &&
           !Construct->isListInitialization()) {
         ImplicitInit = Construct->getNumArgs() == 0 ||
-          Construct->getArg(0)->isDefaultArgument();
+                       Construct->getArg(0)->isDefaultArgument();
       }
     }
     if (!ImplicitInit) {
-- 
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