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* [Bug c++/33665] New: Warning: `this.11' is used uninitialized in this function
@ 2007-10-05 9:52 matthewc at cse dot unsw dot edu dot au
2008-01-06 22:47 ` [Bug c++/33665] [4.1/4.2 regression] Bogus warning: `this.0' " reichelt at gcc dot gnu dot org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: matthewc at cse dot unsw dot edu dot au @ 2007-10-05 9:52 UTC (permalink / raw)
To: gcc-bugs
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Experienced with 4.1.1, 4.1.2 and 4.2.1. Below is the minimum test case that I
can narrow it down to while being reproducible across these versions.
$ g++ -O3 -Wall test.cpp -o test
test.cpp: In function int main():
test.cpp:19: warning: this.11 is used uninitialized in this function
test.cpp:19: note: this.11 was declared here
ws004:/tmp$
---
struct base1
{
int function() { return 1; }
};
struct base2 : public base1
{
double val1;
double val2;
};
struct myclass : public base2
{
public:
int x;
myclass()
{
x = this->function();
}
};
static myclass init_instance()
{
return myclass();
}
struct test_harness
{
const myclass instance;
test_harness() : instance(init_instance())
{
}
int result()
{
return instance.x;
}
};
int main(void)
{
test_harness x;
return x.result();
}
--
Summary: Warning: `this.11' is used uninitialized in this
function
Product: gcc
Version: 4.2.1
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: matthewc at cse dot unsw dot edu dot au
GCC build triplet: i686-pc-linux
GCC host triplet: i686-pc-linux
GCC target triplet: i686-pc-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33665
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/33665] [4.1/4.2 regression] Bogus warning: `this.0' is used uninitialized in this function
2007-10-05 9:52 [Bug c++/33665] New: Warning: `this.11' is used uninitialized in this function matthewc at cse dot unsw dot edu dot au
@ 2008-01-06 22:47 ` reichelt at gcc dot gnu dot org
2008-07-04 22:19 ` [Bug c++/33665] [4.2 " jsm28 at gcc dot gnu dot org
2009-03-30 22:30 ` jsm28 at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2008-01-06 22:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from reichelt at gcc dot gnu dot org 2008-01-06 22:30 -------
Confirmed. Here's a further reduced testcase that triggers the warning
already with "-O -Wall":
================================
struct A {};
struct B : A
{
double x, y;
B() : x(), y() {}
};
inline B getB()
{
return B();
}
struct C : B
{
C() : B(getB()) {}
};
C c;
================================
bug.cc: In function 'void __static_initialization_and_destruction_0(int, int)':
bug.cc:7: warning: 'this.0' is used uninitialized in this function
bug.cc:7: note: 'this.0' was declared here
The bug appeared in GCC 4.1.2, but seems to be fixed on mainline.
--
reichelt at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |reichelt at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |diagnostic
Last reconfirmed|0000-00-00 00:00:00 |2008-01-06 22:30:19
date| |
Summary|Warning: `this.11' is used |[4.1/4.2 regression] Bogus
|uninitialized in this |warning: `this.0' is used
|function |uninitialized in this
| |function
Target Milestone|--- |4.1.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33665
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/33665] [4.2 regression] Bogus warning: `this.0' is used uninitialized in this function
2007-10-05 9:52 [Bug c++/33665] New: Warning: `this.11' is used uninitialized in this function matthewc at cse dot unsw dot edu dot au
2008-01-06 22:47 ` [Bug c++/33665] [4.1/4.2 regression] Bogus warning: `this.0' " reichelt at gcc dot gnu dot org
@ 2008-07-04 22:19 ` jsm28 at gcc dot gnu dot org
2009-03-30 22:30 ` jsm28 at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2008-07-04 22:19 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from jsm28 at gcc dot gnu dot org 2008-07-04 22:18 -------
Closing 4.1 branch.
--
jsm28 at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.1/4.2 regression] Bogus |[4.2 regression] Bogus
|warning: `this.0' is used |warning: `this.0' is used
|uninitialized in this |uninitialized in this
|function |function
Target Milestone|4.1.3 |4.2.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33665
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/33665] [4.2 regression] Bogus warning: `this.0' is used uninitialized in this function
2007-10-05 9:52 [Bug c++/33665] New: Warning: `this.11' is used uninitialized in this function matthewc at cse dot unsw dot edu dot au
2008-01-06 22:47 ` [Bug c++/33665] [4.1/4.2 regression] Bogus warning: `this.0' " reichelt at gcc dot gnu dot org
2008-07-04 22:19 ` [Bug c++/33665] [4.2 " jsm28 at gcc dot gnu dot org
@ 2009-03-30 22:30 ` jsm28 at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2009-03-30 22:30 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from jsm28 at gcc dot gnu dot org 2009-03-30 22:30 -------
Closing 4.2 branch, fixed in 4.3.
--
jsm28 at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Known to fail|4.1.2 4.2.0 4.2.1 4.2.2 |4.1.2 4.2.0 4.2.1 4.2.2
| |4.2.5
Resolution| |FIXED
Target Milestone|4.2.5 |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33665
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2009-03-30 22:30 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2007-10-05 9:52 [Bug c++/33665] New: Warning: `this.11' is used uninitialized in this function matthewc at cse dot unsw dot edu dot au
2008-01-06 22:47 ` [Bug c++/33665] [4.1/4.2 regression] Bogus warning: `this.0' " reichelt at gcc dot gnu dot org
2008-07-04 22:19 ` [Bug c++/33665] [4.2 " jsm28 at gcc dot gnu dot org
2009-03-30 22:30 ` jsm28 at gcc dot gnu dot org
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