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* [Bug c++/17996] New: [3.4/4.0 regression] Destructor run twice
@ 2004-10-14 11:01 reichelt at gcc dot gnu dot org
2004-10-14 11:25 ` [Bug c++/17996] " reichelt at gcc dot gnu dot org
2004-10-14 12:28 ` pinskia at gcc dot gnu dot org
0 siblings, 2 replies; 3+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2004-10-14 11:01 UTC (permalink / raw)
To: gcc-bugs
The following testcase is miscompiled on the 3.4 branch and mainline:
=========================================================
extern int printf(const char *restrict, ...) throw ();
struct A
{
A() { printf("Ctor\n"); }
~A() { printf("Dtor\n"); }
};
A a;
extern A a;
int main()
{
return 0;
}
=========================================================
The output is:
Ctor
Dtor
Dtor
i.e. the destructor of A is run twice.
If I exchange line 9 and 10, the bug goes away.
Btw, the bug was reported at Debian:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=260747
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=265961
The bug affects gcc 3.4.0 and later.
It was introduced somewhere in Mid August 2003.
Mark, your patch
http://gcc.gnu.org/ml/gcc-cvs/2003-08/msg00621.html
might have caused the regression. Could you please have a look?
--
Summary: [3.4/4.0 regression] Destructor run twice
Product: gcc
Version: 3.4.3
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org,mark at codesourcery dot
com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17996
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/17996] [3.4/4.0 regression] Destructor run twice
2004-10-14 11:01 [Bug c++/17996] New: [3.4/4.0 regression] Destructor run twice reichelt at gcc dot gnu dot org
@ 2004-10-14 11:25 ` reichelt at gcc dot gnu dot org
2004-10-14 12:28 ` pinskia at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2004-10-14 11:25 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From reichelt at gcc dot gnu dot org 2004-10-14 11:25 -------
Mark, I just checked, the regression indeed appears with your patch
http://gcc.gnu.org/ml/gcc-cvs/2003-08/msg00621.html
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |critical
Known to fail| |3.4.0 3.4.3 4.0.0
Known to work| |3.3.5
Target Milestone|--- |3.4.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17996
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/17996] [3.4/4.0 regression] Destructor run twice
2004-10-14 11:01 [Bug c++/17996] New: [3.4/4.0 regression] Destructor run twice reichelt at gcc dot gnu dot org
2004-10-14 11:25 ` [Bug c++/17996] " reichelt at gcc dot gnu dot org
@ 2004-10-14 12:28 ` pinskia at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-14 12:28 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-14 12:28 -------
*** This bug has been marked as a duplicate of 17976 ***
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17996
^ permalink raw reply [flat|nested] 3+ messages in thread
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2004-10-14 11:01 [Bug c++/17996] New: [3.4/4.0 regression] Destructor run twice reichelt at gcc dot gnu dot org
2004-10-14 11:25 ` [Bug c++/17996] " reichelt at gcc dot gnu dot org
2004-10-14 12:28 ` pinskia at gcc dot gnu dot org
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