std::regex_constants::error_type

typedef /*implementation defined*/ error_type;

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(since C++11)

constexpr error_type error_collate = /*unspecified*/; constexpr error_type error_ctype = /*unspecified*/; constexpr error_type error_escape = /*unspecified*/; constexpr error_type error_backref = /*unspecified*/; constexpr error_type error_brack = /*unspecified*/; constexpr error_type error_paren = /*unspecified*/; constexpr error_type error_brace = /*unspecified*/; constexpr error_type error_badbrace = /*unspecified*/; constexpr error_type error_range = /*unspecified*/; constexpr error_type error_space = /*unspecified*/; constexpr error_type error_badrepeat = /*unspecified*/; constexpr error_type error_complexity = /*unspecified*/; constexpr error_type error_stack = /*unspecified*/;

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(since C++11) (until C++17)

inline constexpr error_type error_collate = /*unspecified*/; inline constexpr error_type error_ctype = /*unspecified*/; inline constexpr error_type error_escape = /*unspecified*/; inline constexpr error_type error_backref = /*unspecified*/; inline constexpr error_type error_brack = /*unspecified*/; inline constexpr error_type error_paren = /*unspecified*/; inline constexpr error_type error_brace = /*unspecified*/; inline constexpr error_type error_badbrace = /*unspecified*/; inline constexpr error_type error_range = /*unspecified*/; inline constexpr error_type error_space = /*unspecified*/; inline constexpr error_type error_badrepeat = /*unspecified*/; inline constexpr error_type error_complexity = /*unspecified*/; inline constexpr error_type error_stack = /*unspecified*/;

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(since C++17)

error_collate

the expression contains an invalid collating element name

error_ctype

the expression contains an invalid character class name

error_escape

the expression contains an invalid escaped character or a trailing escape

error_backref

the expression contains an invalid back reference

error_brack

the expression contains mismatched square brackets ('' and '')

error_paren

the expression contains mismatched parentheses ('(' and ')')

error_brace

the expression contains mismatched curly braces ('{' and '}')

error_badbrace

the expression contains an invalid range in a {} expression

error_range

the expression contains an invalid character range (e.g. b-a)

error_space

there was not enough memory to convert the expression into a finite state machine

error_badrepeat

one of *?+{ was not preceded by a valid regular expression

error_complexity

the complexity of an attempted match exceeded a predefined level

error_stack

there was not enough memory to perform a match