public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug target/26219] longjmp dosn't work
[not found] <bug-26219-4@http.gcc.gnu.org/bugzilla/>
@ 2012-01-13 22:22 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-01-13 22:22 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26219
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-13 22:18:53 UTC ---
No feedback in almost 5 years so closing.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/26219] longjmp dosn't work
2006-02-11 9:52 [Bug c/26219] New: " mugita at jsdkk dot com
2006-02-11 13:33 ` [Bug target/26219] " rguenth at gcc dot gnu dot org
2006-02-14 3:37 ` mugita at jsdkk dot com
@ 2006-02-14 3:51 ` pinskia at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-02-14 3:51 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from pinskia at gcc dot gnu dot org 2006-02-14 03:51 -------
Can you try:
#include <setjmp.h>
jmp_buf jb_error;
void jump(void){
longjmp(jb_error,1);
}
void func1(void){
return;
}
int main(void){
if(setjmp(jb_error))
return 0;
func1();
jump();
}
I am wondering if you are invoking undefined behavior in calling longjmp twice
on the same setjmp.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26219
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/26219] longjmp dosn't work
2006-02-11 9:52 [Bug c/26219] New: " mugita at jsdkk dot com
2006-02-11 13:33 ` [Bug target/26219] " rguenth at gcc dot gnu dot org
@ 2006-02-14 3:37 ` mugita at jsdkk dot com
2006-02-14 3:51 ` pinskia at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: mugita at jsdkk dot com @ 2006-02-14 3:37 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from mugita at jsdkk dot com 2006-02-14 03:37 -------
h8300-elf-gcc(3.4.3) makes this object.
0x1a0 <main>: 6d f6 mov.w r6,@-e7
- 0x1a2 <main+2>: 0d 76 mov.w r7,r6
0x1a4 <main+4>: 79 00 1d 4a mov.w #0x1d4a,r0
- 0x1a8 <main+8>: 5e 00 01 f0 jsr @0x1f0:0 ;
setjmp(jb_error)
- 0x1ac <main+12>: 5e 00 01 98 jsr @0x198:0 ;
func1()
- 0x1b0 <main+16>: 5e 00 01 88 jsr @0x188:0 ;
jump()
- 0x1b4 <main+20>: 0d 20 mov.w r2,r0
- 0x1b6 <main+22>: 6d 76 mov.w @r7+,r6
- 0x1b8 <main+24>: 54 70 rts
It works fine. run-> setjmp()->func1()->jump()->setjmp() ..
h8300-elf-gcc(4.1.0) makes this object
0x1a8 <main>: 6d f6 mov.w r6,@-e7
- 0x1aa <main+2>: 0d 76 mov.w r7,r6
- 0x1ac <main+4>: 79 02 1d 1a mov.w #0x1d1a,r2
- 0x1b0 <main+8>: 6d f2 mov.w r2,@-e7
- 0x1b2 <main+10>: 5e 00 01 f8 jsr @0x1f8:0
- 0x1b6 <main+14>: 0b 87 adds #0x2,er7
- 0x1b8 <main+16>: 5e 00 01 a0 jsr @0x1a0:0
- 0x1bc <main+20>: 5e 00 01 8c jsr @0x18c:0
- 0x1c0 <main+24>: 6d 76 mov.w @r7+,r6
- 0x1c2 <main+26>: 54 70 rts
It doesn't run correctly. run-> setjmp()->func1()->jump()-> freeze(Infinite
loop in jump())
In more complex program, freeze when run into longjmp().
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26219
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/26219] longjmp dosn't work
2006-02-11 9:52 [Bug c/26219] New: " mugita at jsdkk dot com
@ 2006-02-11 13:33 ` rguenth at gcc dot gnu dot org
2006-02-14 3:37 ` mugita at jsdkk dot com
2006-02-14 3:51 ` pinskia at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-02-11 13:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2006-02-11 13:33 -------
You need to provide a more sensible test or a description of what "works" and
"does not work" for this testcase is supposed to be.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26219
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-01-13 22:19 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <bug-26219-4@http.gcc.gnu.org/bugzilla/>
2012-01-13 22:22 ` [Bug target/26219] longjmp dosn't work pinskia at gcc dot gnu.org
2006-02-11 9:52 [Bug c/26219] New: " mugita at jsdkk dot com
2006-02-11 13:33 ` [Bug target/26219] " rguenth at gcc dot gnu dot org
2006-02-14 3:37 ` mugita at jsdkk dot com
2006-02-14 3:51 ` pinskia at gcc dot gnu dot org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).