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setcontext: Clarify termination when uc_link is the null pointer.

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Thomas Schwinge
2012-07-17 10:05:55 +02:00
parent aaf5420c6d
commit dc97c227c9
3 changed files with 13 additions and 2 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2012-07-17 Thomas Schwinge <thomas@codesourcery.com>
Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* manual/setjmp.texi (setcontext): Clarify normal process
termination when uc_link is the null pointer.
* stdlib/tst-makecontext.c (cf): Exercise this: remove explicit
exit call.
2012-07-16 Andreas Schwab <schwab@linux-m68k.org> 2012-07-16 Andreas Schwab <schwab@linux-m68k.org>
* stdlib/bug-getcontext.c (do_test): Don't test FE_ALL_EXCEPT in * stdlib/bug-getcontext.c (do_test): Don't test FE_ALL_EXCEPT in

3
manual/setjmp.texi
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@ -354,7 +354,8 @@ specified parameters passed. If this function returns execution is
resumed in the context which was referenced by the @code{uc_link} resumed in the context which was referenced by the @code{uc_link}
element of the context structure passed to @code{makecontext} at the element of the context structure passed to @code{makecontext} at the
time of the call. If @code{uc_link} was a null pointer the application time of the call. If @code{uc_link} was a null pointer the application
terminates in this case. terminates normally with an exit status value of @code{EXIT_SUCCESS}
(@pxref{Program Termination}).
Since the context contains information about the stack no two threads Since the context contains information about the stack no two threads
should use the same context at the same time. The result in most cases should use the same context at the same time. The result in most cases

4
stdlib/tst-makecontext.c
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@ -35,7 +35,9 @@ cf (int i)
printf ("i %d thr %d\n", i, thr); printf ("i %d thr %d\n", i, thr);
exit (1); exit (1);
} }
exit (0);
/* Since uc_link below has been set to NULL, setcontext is supposed to
terminate the process normally after this function returns. */
} }
int int