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ltp-list <[email protected]>, Regards-- Subrata On Tue, 2009-09-08 at 10:28 +0800, liubo wrote: > When runing the ltp tool, I found a bug of while loop in some files of > > cpuctl test. > > > File list: > cpuctl_def_task01.c > cpuctl_def_task02.c > cpuctl_def_task03.c > cpuctl_def_task04.c > cpuctl_test01.c > cpuctl_test02.c > cpuctl_test03.c > cpuctl_test04.c > > > During the compilation of these files, gcc's O2 mechanism causes the > variable "timer_expired" to be omitted, hence the loop , > "while(!timer_expired) f = sqrt (f*f)", cannot get right value. > > Change the type of "timer_expired" from "int" to "volatile int" to fix > this bug. > > > Signed-off-by: Miao Xie<[email protected]> > Signed-off-by: Liu Bo<[email protected]> > --- > diff --git a/cpuctl_def_task01.c b/cpuctl_def_task01.c > index 00a25bc..1fb398a 100644 > --- a/cpuctl_def_task01.c > +++ b/cpuctl_def_task01.c > @@ -82,7 +82,7 @@ extern void cleanup() > kill(scriptpid, SIGUSR1);/* Inform the shell to do cleanup*/ > tst_exit(); /* Report exit status*/ > } > -int timer_expired = 0; > +volatile int timer_expired = 0; > > int main(int argc, char *argv[]) > { > diff --git a/cpuctl_def_task02.c b/cpuctl_def_task02.c > index 1bfa187..56ddacc 100644 > --- a/cpuctl_def_task02.c > +++ b/cpuctl_def_task02.c > @@ -79,7 +79,7 @@ cleanup() > tst_exit(); /* Report exit status*/ > } > > -int timer_expired = 0; > +volatile int timer_expired = 0; > > int main(int argc, char *argv[]) > { > diff --git a/cpuctl_def_task03.c b/cpuctl_def_task03.c > index e4ce3ad..4f3ddc1 100644 > --- a/cpuctl_def_task03.c > +++ b/cpuctl_def_task03.c > @@ -79,7 +79,7 @@ cleanup() > tst_exit(); /* Report exit status*/ > } > > -int timer_expired = 0; > +volatile int timer_expired = 0; > > int main(int argc, char *argv[]) > { > diff --git a/cpuctl_def_task04.c b/cpuctl_def_task04.c > index 15e2b5f..7f184c8 100644 > --- a/cpuctl_def_task04.c > +++ b/cpuctl_def_task04.c > @@ -78,7 +78,7 @@ cleanup() > tst_exit(); /* Report exit status*/ > } > > -int timer_expired = 0; > +volatile int timer_expired = 0; > > int main(int argc, char *argv[]) > { > diff --git a/cpuctl_test01.c b/cpuctl_test01.c > index ab0a4c9..7d7cc48 100644 > --- a/cpuctl_test01.c > +++ b/cpuctl_test01.c > @@ -80,7 +80,7 @@ cleanup() > kill (scriptpid, SIGUSR1);/* Inform the shell to do cleanup*/ > tst_exit (); /* Report exit status*/ > } > -int timer_expired = 0; > +volatile int timer_expired = 0; > > int main(int argc, char* argv[]) > { > diff --git a/cpuctl_test02.c b/cpuctl_test02.c > index 801716d..153a293 100644 > --- a/cpuctl_test02.c > +++ b/cpuctl_test02.c > @@ -80,7 +80,7 @@ cleanup() > } > > int migrate_task (); > -int timer_expired = 0; > +volatile int timer_expired = 0; > > int main(int argc, char* argv[]) > { > diff --git a/cpuctl_test03.c b/cpuctl_test03.c > index c4b9978..c21b69c 100644 > --- a/cpuctl_test03.c > +++ b/cpuctl_test03.c > @@ -79,7 +79,7 @@ cleanup() > tst_exit (); /* Report exit status*/ > } > > -int timer_expired = 0; > +volatile int timer_expired = 0; > > int main(int argc, char* argv[]) > { > diff --git a/cpuctl_test04.c b/cpuctl_test04.c > index b0a2329..ed00b0d 100644 > --- a/cpuctl_test04.c > +++ b/cpuctl_test04.c > @@ -79,7 +79,7 @@ cleanup() > tst_exit (); /* Report exit status*/ > } > > -int timer_expired = 0; > +volatile int timer_expired = 0; > > int main(int argc, char* argv[]) > { > > > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > Ltp-cvs mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ltp-cvs ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Ltp-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ltp-list
