jmp_buf

 

C

Compiler support

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Strings library

Algorithms

Numerics

Date and time utilities

Input/output support

Localization support

Concurrency support (C11)

Technical Specifications

Symbol index

 

Program support utilities

Program termination
abort exit quick_exit (C11) _Exit (C99)	atexit at_quick_exit (C11) EXIT_SUCCESSEXIT_FAILURE
Unreachable control flow
unreachable (C23)
Communicating with the environment
getenvgetenv_s (C11)	system
Memory alignment query
memalignment (C23)
Signals
signal raise sig_atomic_t	SIG_DFLSIG_IGN SIG_ERR
Signal types
SIGABRTSIGFPESIGILL	SIGINTSIGSEGVSIGTERM
Non-local jumps
setjmp	longjmp
Types
jmp_buf

 

Defined in header <setjmp.h>
typedef /* unspecified */ jmp_buf;

The jmp_buf type is an array type suitable for storing information to restore a calling environment. The stored information is sufficient to restore execution at the correct block of the program and invocation of that block. The state of floating-point status flags, or open files, or any other data is not stored in an object of type jmp_buf.

References

• C17 standard (ISO/IEC 9899:2018):

• 7.13/2 Nonlocal jumps <setjmp.h> (p: 191)

• C11 standard (ISO/IEC 9899:2011):

• 7.13/2 Nonlocal jumps <setjmp.h> (p: 262)

• C99 standard (ISO/IEC 9899:1999):

• 7.13/2 Nonlocal jumps <setjmp.h> (p: 243)

• C89/C90 standard (ISO/IEC 9899:1990):

• 4.6 NON-LOCAL JUMPS <setjmp.h>

See also

setjmp	saves the context (function macro)
longjmp	jumps to specified location (function)
C++ documentation for jmp_buf