Add missing include (cstdlib) to Demangle.h

[kzhuravl]

Summary

One of our internal builders choked on free in Demangle.cpp.

[erik.pilkington]

LGTM!

[jhenderson]

LGTM, if it is moved into Demangle.cpp. I don't think we want to be adding unnecessary dependencies to headers, when a .cpp file change would suffice.

include/llvm/Demangle/Demangle.h

13 ↗

(On Diff #182822)

Shouldn't this be in Demangle.cpp, since the only usage is there?

[kzhuravl]

Will fix during committing. Thanks.

llvm/trunk/lib/Demangle/Demangle.cpp

 //===-- Demangle.cpp - Common demangling functions ------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file This file contains definitions of common demangling functions.
 ///
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Demangle/Demangle.h"
+#include <cstdlib>
 
 static bool isItaniumEncoding(const std::string &MangledName) {
   size_t Pos = MangledName.find_first_not_of('_');
   // A valid Itanium encoding requires 1-4 leading underscores, followed by 'Z'.
   return Pos > 0 && Pos <= 4 && MangledName[Pos] == 'Z';
 }
 
 std::string llvm::demangle(const std::string &MangledName) {