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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2008-11-24 16:45:12 -0500 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2008-11-25 20:54:25 -0500 |
| commit | 28e00ccfa55d65cbe1040a061a8099c22f8d5579 (patch) | |
| tree | e79e4cce6d42b576dcf264b85f64981c5f2a5aa0 /man3/pthread_cleanup_push.3 | |
| parent | 707420475b1fc391ade4f273a4f5313846f52b66 (diff) | |
| download | man-pages-28e00ccfa55d65cbe1040a061a8099c22f8d5579.tar.gz | |
pthread_cleanup_push.3: Prematurely exiting a cleanup block is undefined according to POSIX.1
POSIX.1 says that prematurely exiting a push/pop block
yields undefined results.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Reported-by: Loic Domaigne <tech@domaigne.com>
Diffstat (limited to 'man3/pthread_cleanup_push.3')
| -rw-r--r-- | man3/pthread_cleanup_push.3 | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/man3/pthread_cleanup_push.3 b/man3/pthread_cleanup_push.3 index ba65540b19..98b58e708f 100644 --- a/man3/pthread_cleanup_push.3 +++ b/man3/pthread_cleanup_push.3 @@ -21,7 +21,7 @@ .\" Formatted or processed versions of this manual, if unaccompanied by .\" the source, must acknowledge the copyright and authors of this work. .\" -.TH PTHREAD_CLEANUP_PUSH 3 2008-11-14 "Linux" "Linux Programmer's Manual" +.TH PTHREAD_CLEANUP_PUSH 3 2008-11-24 "Linux" "Linux Programmer's Manual" .SH NAME pthread_cleanup_push, pthread_cleanup_pop \- push and pop thread cancellation clean-up handlers @@ -130,6 +130,21 @@ functions \fIare\fP implemented as macros that expand to text containing \(aq\fB{\fP\(aq and \(aq\fB}\fP\(aq, respectively. This means that variables declared within the scope of paired calls to these functions will only be visible within that scope. + +POSIX.1 +.\" The text was actually added in the 2004 TC2 +says that the effect of using +.IR return , +.IR break , +.IR continue , +or +.IR goto +to prematurely leave a block bracketed +.BR pthread_cleanup_push () +and +.BR pthread_cleanup_pop () +is undefined. +Portable applications should avoid doing this. .SH EXAMPLE The program below provides a simple example of the use of the functions described in this page. |