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* [Bug c++/52003] New: warning about (un)existing return statement in the main function declared 'noreturn'
@ 2012-01-26 0:18 gnumaurorusso at gmail dot com
2012-01-26 0:46 ` [Bug c++/52003] " redi at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: gnumaurorusso at gmail dot com @ 2012-01-26 0:18 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52003
Bug #: 52003
Summary: warning about (un)existing return statement in the
main function declared 'noreturn'
Classification: Unclassified
Product: gcc
Version: 4.5.3
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: gnumaurorusso@gmail.com
this function generates the warning :
function declared 'noreturn' has a 'return' statement
(at least it does with
-funsigned-char -funsigned-bitfields -O0 -fpack-struct -fshort-enums -g2 -Wall
options)
__attribute__((noreturn)) int main(void){
while(1);
}
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug c++/52003] warning about (un)existing return statement in the main function declared 'noreturn' 2012-01-26 0:18 [Bug c++/52003] New: warning about (un)existing return statement in the main function declared 'noreturn' gnumaurorusso at gmail dot com @ 2012-01-26 0:46 ` redi at gcc dot gnu.org 2012-01-26 0:47 ` pinskia at gcc dot gnu.org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: redi at gcc dot gnu.org @ 2012-01-26 0:46 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52003 --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-01-26 00:14:40 UTC --- That's not the right syntax for declaring attributes of functions. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/52003] warning about (un)existing return statement in the main function declared 'noreturn' 2012-01-26 0:18 [Bug c++/52003] New: warning about (un)existing return statement in the main function declared 'noreturn' gnumaurorusso at gmail dot com 2012-01-26 0:46 ` [Bug c++/52003] " redi at gcc dot gnu.org @ 2012-01-26 0:47 ` pinskia at gcc dot gnu.org 2012-01-26 13:18 ` rguenth at gcc dot gnu.org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu.org @ 2012-01-26 0:47 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52003 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-26 00:18:15 UTC --- main has an implicit return 0 if it follows through to the end according to the C++ standard IIRC. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/52003] warning about (un)existing return statement in the main function declared 'noreturn' 2012-01-26 0:18 [Bug c++/52003] New: warning about (un)existing return statement in the main function declared 'noreturn' gnumaurorusso at gmail dot com 2012-01-26 0:46 ` [Bug c++/52003] " redi at gcc dot gnu.org 2012-01-26 0:47 ` pinskia at gcc dot gnu.org @ 2012-01-26 13:18 ` rguenth at gcc dot gnu.org 2012-01-27 6:43 ` gnumaurorusso at gmail dot com 2012-10-14 15:43 ` paolo.carlini at oracle dot com 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2012-01-26 13:18 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52003 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-01-26 Ever Confirmed|0 |1 --- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-26 11:19:02 UTC --- (In reply to comment #2) > main has an implicit return 0 if it follows through to the end according to the > C++ standard IIRC. Indeed it does. GCC simply tells you that putting 'noreturn' on main is not good. If we don't want this warning maybe the C++ FE should mark that return stmt with TREE_NO_WARNING and we should honor that flag. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/52003] warning about (un)existing return statement in the main function declared 'noreturn' 2012-01-26 0:18 [Bug c++/52003] New: warning about (un)existing return statement in the main function declared 'noreturn' gnumaurorusso at gmail dot com ` (2 preceding siblings ...) 2012-01-26 13:18 ` rguenth at gcc dot gnu.org @ 2012-01-27 6:43 ` gnumaurorusso at gmail dot com 2012-10-14 15:43 ` paolo.carlini at oracle dot com 4 siblings, 0 replies; 6+ messages in thread From: gnumaurorusso at gmail dot com @ 2012-01-27 6:43 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52003 --- Comment #4 from mauro <gnumaurorusso at gmail dot com> 2012-01-27 00:27:43 UTC --- (In reply to comment #2) > main has an implicit return 0 if it follows through to the end according to the > C++ standard IIRC. Ok, I thought it was something like that. Thanks for answer. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/52003] warning about (un)existing return statement in the main function declared 'noreturn' 2012-01-26 0:18 [Bug c++/52003] New: warning about (un)existing return statement in the main function declared 'noreturn' gnumaurorusso at gmail dot com ` (3 preceding siblings ...) 2012-01-27 6:43 ` gnumaurorusso at gmail dot com @ 2012-10-14 15:43 ` paolo.carlini at oracle dot com 4 siblings, 0 replies; 6+ messages in thread From: paolo.carlini at oracle dot com @ 2012-10-14 15:43 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52003 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |INVALID --- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-10-14 15:43:06 UTC --- Closing. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-10-14 15:43 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-01-26 0:18 [Bug c++/52003] New: warning about (un)existing return statement in the main function declared 'noreturn' gnumaurorusso at gmail dot com 2012-01-26 0:46 ` [Bug c++/52003] " redi at gcc dot gnu.org 2012-01-26 0:47 ` pinskia at gcc dot gnu.org 2012-01-26 13:18 ` rguenth at gcc dot gnu.org 2012-01-27 6:43 ` gnumaurorusso at gmail dot com 2012-10-14 15:43 ` paolo.carlini at oracle dot com
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