34 lines
1.3 KiB
Markdown
34 lines
1.3 KiB
Markdown
[csetjmp.syn]
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# 17 Language support library [[support]](./#support)
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## 17.14 Other runtime support [[support.runtime]](support.runtime#csetjmp.syn)
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### 17.14.3 Header <csetjmp> synopsis [csetjmp.syn]
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[ð](#lib:jmp_buf)
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#define __STDC_VERSION_SETJMP_H__ 202311Lnamespace std {using jmp_buf = *see below*; [[noreturn]] void longjmp(jmp_buf env, int val);}#define setjmp(env) *see below*
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L6431)
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The contents of the header <csetjmp> are the same as the C
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standard library header [<setjmp.h>](support.c.headers.general#header:%3csetjmp.h%3e "17.15.1 General [support.c.headers.general]")[.](#1.sentence-1)
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[2](#2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L6435)
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The function signaturelongjmp(jmp_buf jbuf, int val) has more restricted behavior in this document[.](#2.sentence-1)
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A setjmp/longjmp call pair has undefined
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behavior if replacing the setjmp and longjmp by catch and throw would invoke any non-trivial destructors for any objects
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with automatic storage duration[.](#2.sentence-2)
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A call to setjmp or longjmp has undefined
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behavior if invoked in a suspension context of a coroutine ([[expr.await]](expr.await "7.6.2.4 Await"))[.](#2.sentence-3)
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See also: ISO/IEC 9899:2024, 7.13
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