std::stacktrace_entry::source_line

 

C++

Compiler support

Freestanding and hosted

Language

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Technical specifications

Symbols index

External libraries

 

Diagnostics library

Exception handling exception uncaught_exceptionuncaught_exceptions (until C++20)(C++17) exception_ptr (C++11) make_exception_ptr (C++11) current_exception (C++11) rethrow_exception (C++11) nested_exception (C++11) throw_with_nested (C++11) rethrow_if_nested (C++11) Exception handling failures terminate terminate_handler get_terminate (C++11) set_terminate bad_exception unexpected (until C++17) unexpected_handler (until C++17) get_unexpected (C++11)(until C++17) set_unexpected (until C++17) Error codes Error codes errno

Exception categories logic_error invalid_argument domain_error length_error out_of_range runtime_error range_error overflow_error underflow_error tx_exception (TM TS) System error support error_category (C++11) generic_category (C++11) system_category (C++11) error_condition (C++11) errc (C++11) error_code (C++11) system_error (C++11) Assertions assert Stacktrace stacktrace_entry (C++23) basic_stacktrace (C++23)

 

std::stacktrace_entry

Member functions

stacktrace_entry::stacktrace_entry (C++23)

stacktrace_entry::operator= (C++23)

Observers

stacktrace_entry::native_handle (C++23)

stacktrace_entry::operator bool (C++23)

Query

stacktrace_entry::description (C++23)

stacktrace_entry::source_file (C++23)

stacktrace_entry::source_line (C++23)

Non-member functions

operator== operator<=> (C++23)(C++23)

to_string (C++23)

operator<< (C++23)

Helper classes

hash<stacktrace_entry> (C++23)

 

std::uint_least32_t source_line() const;		(since C++23)

Returns a 1-based line number that lexically relates to the evaluation represented by *this, or 0 on failure other than allocation failure, e.g. when *this is empty.

Either source_file returns the presumed source file name and source_line returns the presumed line number, or source_file returns the actual source file name and source_line returns the actual line number.

Parameters

(none)

Return value

The line number specified above on success, 0 on failure other than allocation failure.

Exceptions

Throws std::bad_alloc if memory for the internal data structures cannot be allocated.

Notes

The presumed line number is what the predefined macro __LINE__ expands to, and can be changed by the #line directive.

This function is not required to be noexcept because getting source line requires allocation on some platforms.

See also

line	return the line number represented by this object (public member function of std::source_location)