Description
The
longjmp function restores the calling
environment saved by the most recent invocation of the setjmp macro in the same invocation of
the program, with the corresponding jmpbuf argument. If
there has been no such invocation or if the function
containing the invocation of the
setjmp macro has terminated execution than the the
behavior is undefined.
Returns
After longjmp is completed,
program execution continues as if the corresponding
invocation of the setjmp macro
had just returned the value specified by val. The longjmp function cannot cause the
setjmp macro to return the value
0: if val is 0, the setjmp macro
returns the value 1.
Implementation Notes
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In GCC-1750, if longjmp is
used with expanded memory then the calling
environment includes the address state.
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