Intel C++ compiler on Windows catastrophic error: cannot open source file “bits/unique_ptr.h”

Question

I am trying to use the Intel C++ compiler 19.0 to compile my code on Windows. I am using the following call:

icl /Qstd=c++11 c:\\Users\\Bernardo\\Downloads\\HW1_6200\\ProjectAmina\\WaterPaths\\src\\SystemComponents\\Utility\\Utility.cpp

Even though this code compiles on Linux systems, when I try to compile it on Windows I get the following error:

c:\Users\Bernardo\Downloads\HW1_6200\ProjectAmina\WaterPaths>icl /Qstd=c++11 c:\Users\Bernardo\Downloads\HW1_6200\ProjectAmina\WaterPaths\src\SystemComponents\Utility\Utility.cpp
Intel(R) C++ Intel(R) 64 Compiler for applications running on Intel(R) 64, Version 19.0.3.203 Build 20190206
Copyright (C) 1985-2019 Intel Corporation.  All rights reserved.

Utility.cpp
c:\Users\Bernardo\Downloads\HW1_6200\ProjectAmina\WaterPaths\src\SystemComponents\Utility\Utility.h(10): catastrophic error: cannot open source file "bits/unique_ptr.h"
  #include <bits/unique_ptr.h>
                              ^

compilation aborted for c:\Users\Bernardo\Downloads\HW1_6200\ProjectAmina\WaterPaths\src\SystemComponents\Utility\Utility.cpp (code 4)

For some reason, my standard library doesn't seem to have smart pointers. What am I missing?

Answer 1

The header <bits/unique_ptr.h> is an internal implementation detail of GCC's standard library. It's one of the headers that makes up the implementation of <memory> .

So it looks like your code is trying to include a header from the GCC standard library, which works fine if you compile with GCC's standard library, but not when using a different standard library. And that should be obvious. You can't include a header that doesn't exist in a different implementation.

User code should never try to include <bits/unique_ptr.h> directly, because it doesn't even exist in other implementations of the C++ standard library. The correct header to include is <memory> . The code needs to be fixed to stop trying to include internal implementation details of a specific implementation.

There's even a comment saying this in <bits/unique_ptr.h> :

/** @file bits/unique_ptr.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{memory}
 */

Answer 2

std::unique_ptr的正确头文件是

#include <memory>