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[terminate.handler]
# 17 Language support library [[support]](./#support)
## 17.9 Exception handling [[support.exception]](support.exception#terminate.handler)
### 17.9.5 Abnormal termination [[exception.terminate]](exception.terminate#terminate.handler)
#### 17.9.5.1 Type terminate_handler [terminate.handler]
[🔗](#lib:terminate_handler)
`using terminate_handler = void (*)();
`
[1](#1)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L4010)
The type of a [*handler function*](#def:handler_function) to be invoked by terminatewhen terminating exception processing[.](#1.sentence-1)
[2](#2)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L4016)
*Required behavior*: A terminate_handler shall
terminate execution of the program without returning to the caller[.](#2.sentence-1)
[3](#3)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L4021)
*Default behavior*: The implementation's default terminate_handler callsabort()[.](#3.sentence-1)