std::exception

C++

Language

Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

Utilities library

Type support (basic types, RTTI, type traits)
Dynamic memory management
Error handling
Program utilities
Variadic functions
Library feature-test macros
Date and time
Function objects
initializer_list (C++11)
bitset
hash (C++11)
integer_sequence (C++14)
Relational operators (deprecated)
rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=
Comparisons (C++20)
strong_order weak_order partial_order strong_equal weak_equal	strong_ordering weak_ordering partial_ordering strong_equality weak_equality	is_eqis_neqis_ltis_lteqis_gtis_gteq
common_comparison_category
Common vocabulary types
pair tuple (C++11) apply (C++17) make_from_tuple (C++17)	optional (C++17) any (C++17) variant (C++17)
Swap, forward and move
swap
exchange (C++14)
forward (C++11)
move (C++11)
move_if_noexcept (C++11)
Elementary string conversions
to_chars (C++17)
from_chars (C++17)
chars_format (C++17)
Type operations
declval (C++11)
as_const (C++17)

Error handling

Exception handling exception uncaught_exceptionuncaught_exceptions (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) Contracts contract_violation (C++20)

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) Error codes Error codes errno Assertions assert system_error facility 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)

std::exception

Member functions

exception::exception

exception::~exception

exception::operator=

exception::what

Defined in header <exception>
class exception;

Provides consistent interface to handle errors through the throw expression.

All exceptions generated by the standard library inherit from std::exception

• logic_error

• invalid_argument
• domain_error
• length_error
• out_of_range
• future_error(C++11)

• bad_optional_access(C++17)
• runtime_error

• range_error
• overflow_error
• underflow_error
• regex_error(C++11)
• nonexistent_local_time(C++20)
• ambiguous_local_time(C++20)
• tx_exception(TM TS)
• system_error(C++11)

• ios_base::failure(C++11)
• filesystem::filesystem_error(C++17)

• bad_typeid
• bad_cast

• bad_any_cast(C++17)

• bad_weak_ptr(C++11)
• bad_function_call(C++11)
• bad_alloc

• bad_array_new_length(C++11)

• bad_exception
• ios_base::failure(until C++11)
• bad_variant_access(C++17)

Member functions

(constructor)	constructs the exception object (public member function)
(destructor) [virtual]	destroys the exception object (virtual public member function)
operator=	copies exception object (public member function)
what [virtual]	returns an explanatory string (virtual public member function)