---
name: "std::experimental::bad_optional_access"
section: "3"
platform: "linux"
package: "gcc"
version: "16.2.1+r23+gd564253eb6c8-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/std::experimental::bad_optional_access"
---

# std::experimental::bad\_optional\_access(3)

Exception class thrown when a disengaged optional object is dereferenced.

## NAME

std::experimental::bad\_optional\_access - Exception class thrown when a disengaged optional object is dereferenced.

## SYNOPSIS

\#include \<optional\>

Inherits **std::logic\_error**.

### Public Member Functions

**bad\_optional\_access** (const char \*\_\_arg)\
 virtual const char \* **what** () const noexcept\

## Detailed Description

Exception class thrown when a disengaged optional object is dereferenced.

## Member Function Documentation

### virtual const char \* std::logic\_error::what () const \[virtual\], \[noexcept\], \[inherited\]

Returns a C-style character string describing the general cause of the current error (the same string passed to the ctor).

Reimplemented from **std::exception**.

Reimplemented in **std::future\_error**.

References **what()**.

Referenced by **what()**.

## Author

Generated automatically by Doxygen for libstdc++ from the source code.