std::filesystem::filesystem_error::path1, std::filesystem::filesystem_error::path2

 

C++

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Freestanding and hosted

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Standard library headers

Named requirements

Feature test macros(C++20)

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Concepts library(C++20)

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Metaprogramming library(C++11)

General utilities library

Containers library

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Filesystem library(C++17)

Concurrency support library(C++11)

Execution control library(C++26)

Technical specifications

Symbols index

External libraries

 

Filesystem library

Classes
filesystem::path filesystem::filesystem_error filesystem::directory_entry filesystem::directory_iterator filesystem::recursive_directory_iterator    filesystem::file_status filesystem::space_info	filesystem::file_type filesystem::file_time_type filesystem::perms filesystem::perm_options filesystem::copy_options filesystem::directory_options
Functions
filesystem::absolute filesystem::canonicalfilesystem::weakly_canonical filesystem::relativefilesystem::proximate filesystem::copy filesystem::copy_file filesystem::copy_symlink filesystem::create_directory filesystem::create_directories filesystem::create_hard_link filesystem::create_symlink filesystem::create_directory_symlink filesystem::current_path filesystem::temp_directory_path	filesystem::exists filesystem::equivalent filesystem::file_size filesystem::hard_link_count filesystem::last_write_time filesystem::permissions filesystem::read_symlink filesystem::remove filesystem::remove_all filesystem::rename filesystem::resize_file filesystem::space filesystem::status filesystem::symlink_status
File types
filesystem::is_block_file filesystem::is_character_file filesystem::is_directory filesystem::is_empty filesystem::status_known	filesystem::is_fifo filesystem::is_other filesystem::is_regular_file filesystem::is_socket filesystem::is_symlink

 

filesystem_error

Member functions

filesystem_error::filesystem_error

filesystem_error::operator=

filesystem_error::path1filesystem_error::path2

filesystem_error::what

Inherited from std::system_error

system_error::code

 

conststd::filesystem::path& path1()constnoexcept;		(since C++17)
conststd::filesystem::path& path2()constnoexcept;		(since C++17)

Returns the paths that were stored in the exception object.

Parameters

(none)

Return value

References to the copy of the path parameters stored by the constructor.

Example

Run this code

#include <cstdio>#include <filesystem>#include <iostream>   int main(){conststd::filesystem::path old_p{std::tmpnam(nullptr)}, new_p{std::tmpnam(nullptr)};try{std::filesystem::rename(old_p, new_p);// throws since old_p does not exist}catch(std::filesystem::filesystem_errorconst& ex){std::cout<<"what(): "<< ex.what()<<'\n'<<"path1(): "<< ex.path1()<<'\n'<<"path2(): "<< ex.path2()<<'\n';}}

Possible output:

what(): filesystem error: cannot rename: No such file or directory [/tmp/fileIzzRLB] [/tmp/fileiUDWlV] path1(): "/tmp/fileIzzRLB" path2(): "/tmp/fileiUDWlV"