[bad.alloc]

# 17 Language support library [[support]](./#support)

## 17.6 Dynamic memory management [[support.dynamic]](support.dynamic#bad.alloc)

### 17.6.4 Storage allocation errors [[alloc.errors]](alloc.errors#bad.alloc)

#### 17.6.4.1 Class bad_alloc [bad.alloc]

[ð](#lib:bad_alloc,constructor)

namespace std {class bad_alloc : public exception {public:// see [[exception]](exception "17.9.3 Class exception") for the specification of the special member functionsconstexpr const char* what() const noexcept override; };}

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L3031)

The classbad_alloc defines the type of objects thrown as
exceptions by the implementation to report a failure to allocate storage[.](#1.sentence-1)

[ð](#lib:what,bad_alloc)

`constexpr const char* what() const noexcept override;
`

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L3043)

*Returns*: An implementation-defined ntbs[.](#2.sentence-1)
