[uncaught.exceptions]

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

## 17.9 Exception handling [[support.exception]](support.exception#uncaught.exceptions)

### 17.9.6 uncaught_exceptions [uncaught.exceptions]

[🔗](#lib:uncaught_exceptions)

`constexpr int uncaught_exceptions() noexcept;
`

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L4102)

*Returns*: The number of uncaught exceptions ([[except.throw]](except.throw "14.2 Throwing an exception")) in the current thread[.](#1.sentence-1)

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L4106)

*Remarks*: When uncaught_exceptions() > 0,
throwing an exception can result in a call of the function[std​::​terminate](except.terminate "14.6.2 The std​::​terminate function [except.terminate]")[.](#2.sentence-1)