[out.of.range]

# 19 Diagnostics library [[diagnostics]](./#diagnostics)

## 19.2 Exception classes [[std.exceptions]](std.exceptions#out.of.range)

### 19.2.7 Class out_of_range [out.of.range]

[ð](#lib:out_of_range)

namespace std {class out_of_range : public logic_error {public:constexpr explicit out_of_range(const string& what_arg); constexpr explicit out_of_range(const char* what_arg); };}

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L257)

The classout_of_range defines the type of objects thrown as exceptions to report an
argument value not in its expected range[.](#1.sentence-1)

[ð](#lib:out_of_range,constructor)

`constexpr out_of_range(const string& what_arg);
`

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L270)

*Postconditions*: strcmp(what(), what_arg.c_str()) == 0[.](#2.sentence-1)

[ð](#lib:out_of_range,constructor_)

`constexpr out_of_range(const char* what_arg);
`

[3](#3)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L281)

*Postconditions*: strcmp(what(), what_arg) == 0[.](#3.sentence-1)
