system_error Class Reference

#include <format.h>

Public Member Functions
template<typename... Args>
	system_error (int error_code, string_view message, const Args &... args)
	system_error (const system_error &)=default
system_error &	operator= (const system_error &)=default
	system_error (system_error &&)=default
system_error &	operator= (system_error &&)=default
	~system_error () FMT_NOEXCEPT FMT_OVERRIDE
int	error_code () const

Protected Member Functions
	system_error ()

Protected Attributes
int	error_code_

Private Member Functions
void	init (int err_code, string_view format_str, format_args args)

Detailed Description

An error returned by an operating system or a language runtime, for example a file opening error.

Definition at line 2702 of file format.h.

Constructor & Destructor Documentation

system_error() [1/4]

system_error ( )

protected

Definition at line 2709 of file format.h.

system_error() [2/4]

system_error	(	int	error_code,
		string_view	message,
		const Args &...	args
	)

Constructs a :class:fmt::system_error object with a description formatted with fmt::format_system_error. message and additional arguments passed into the constructor are formatted similarly to fmt::format.

Example**::

This throws a system_error with the description cannot open file 'madeup': No such file or directory or similar (system message may vary). const char *filename = "madeup"; std::FILE *file = std::fopen(filename, "r"); if (!file) throw fmt::system_error(errno, "cannot open file '{}'", filename);

Definition at line 2731 of file format.h.

References FMT_NOEXCEPT, FMT_OVERRIDE, and make_format_args().

system_error() [3/4]

system_error ( const system_error &  )

default

system_error() [4/4]

system_error ( system_error &&  )

default

~system_error()

FMT_API FMT_FUNC ~system_error ( )

default

Referenced by internal::decimal_point_impl().

Member Function Documentation

error_code()

int error_code

(

)

const

Definition at line 2741 of file format.h.

References FMT_API, FMT_NOEXCEPT, format_system_error(), make_format_args(), and report_system_error().

init()

FMT_FUNC void init ( int  err_code, string_view  format_str, format_args  args  )

private

Definition at line 233 of file format-inl.h.

References format_system_error(), to_string(), and internal::vformat().

operator=() [1/2]

system_error& operator= ( const system_error &  )

default

operator=() [2/2]

system_error& operator= ( system_error &&  )

default

Member Data Documentation

error_code_

int error_code_

protected

Definition at line 2707 of file format.h.