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* [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef
@ 2010-06-23 10:53 redi at gcc dot gnu dot org
2010-06-24 21:32 ` [Bug c++/44645] " rguenth at gcc dot gnu dot org
` (11 more replies)
0 siblings, 12 replies; 13+ messages in thread
From: redi at gcc dot gnu dot org @ 2010-06-23 10:53 UTC (permalink / raw)
To: gcc-bugs
this breaks debugging of std::map and other tree-based containers in the
library, see http://gcc.gnu.org/ml/libstdc++/2010-06/msg00159.html for more
info
$ cat debug2.cc
struct S
{
typedef S* ptr;
ptr p;
};
int main()
{
S s = { };
return !s.p;
}
$ $GCC45/bin/g++ -g -Wl,-R$GCC45/lib64 debug2.cc -o out2-45
$ gdb --quiet ./out2-45
Reading symbols from /tmp/out2-45...done.
(gdb) ptype S
type = struct S {
S::ptr p;
}
(gdb) ptype S::p
type = void *
That type is wrong, it should be S* not void*
GCC 4.4 gets it right, by not tracking the typedef at all:
(gdb) ptype S
type = struct S {
S *p;
}
(gdb) ptype S::p
type = struct S {
S *p;
} *
GCC 4.6 tracks the typedef and gets its type right:
(gdb) ptype S
type = struct S {
S::ptr p;
}
(gdb) ptype S::p
type = struct S {
S::ptr p;
} *
--
Summary: [4.5 Regression] wrong debug info for nested typedef
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Keywords: wrong-debug
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: redi at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug c++/44645] [4.5 Regression] wrong debug info for nested typedef
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
@ 2010-06-24 21:32 ` rguenth at gcc dot gnu dot org
2010-06-24 22:04 ` rguenth at gcc dot gnu dot org
` (10 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-06-24 21:32 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.5.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug c++/44645] [4.5 Regression] wrong debug info for nested typedef
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
2010-06-24 21:32 ` [Bug c++/44645] " rguenth at gcc dot gnu dot org
@ 2010-06-24 22:04 ` rguenth at gcc dot gnu dot org
2010-07-13 11:54 ` [Bug debug/44645] " redi at gcc dot gnu dot org
` (9 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-06-24 22:04 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug debug/44645] [4.5 Regression] wrong debug info for nested typedef
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
2010-06-24 21:32 ` [Bug c++/44645] " rguenth at gcc dot gnu dot org
2010-06-24 22:04 ` rguenth at gcc dot gnu dot org
@ 2010-07-13 11:54 ` redi at gcc dot gnu dot org
2010-07-21 15:50 ` redi at gcc dot gnu dot org
` (8 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: redi at gcc dot gnu dot org @ 2010-07-13 11:54 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from redi at gcc dot gnu dot org 2010-07-13 11:54 -------
Oops, this should be Component=debug
--
redi at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |debug
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug debug/44645] [4.5 Regression] wrong debug info for nested typedef
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
` (2 preceding siblings ...)
2010-07-13 11:54 ` [Bug debug/44645] " redi at gcc dot gnu dot org
@ 2010-07-21 15:50 ` redi at gcc dot gnu dot org
2010-07-31 9:35 ` rguenth at gcc dot gnu dot org
` (7 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: redi at gcc dot gnu dot org @ 2010-07-21 15:50 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from redi at gcc dot gnu dot org 2010-07-21 15:50 -------
Am I allowed to confirm my own bugs? doing so anyway
There's no difference when using -gdwarf-2 -gstrict-dwarf
readelf -wi for the output of g++ 4.5 shows S::ptr as:
<1><4f>: Abbrev Number: 5 (DW_TAG_pointer_type)
DW_AT_byte_size : 8
which is missing the type, so S::ptr is void*
The output of g++ 4.4 and 4.6 shows:
<1><4f>: Abbrev Number: 5 (DW_TAG_pointer_type)
DW_AT_byte_size : 8
DW_AT_type : <2d>
where <2d> is the info for S so S::ptr is S*
--
redi at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2010-07-21 15:50:23
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug debug/44645] [4.5 Regression] wrong debug info for nested typedef
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
` (3 preceding siblings ...)
2010-07-21 15:50 ` redi at gcc dot gnu dot org
@ 2010-07-31 9:35 ` rguenth at gcc dot gnu dot org
2010-08-19 12:20 ` redi at gcc dot gnu dot org
` (6 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-07-31 9:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from rguenth at gcc dot gnu dot org 2010-07-31 09:29 -------
GCC 4.5.1 is being released, adjusting target milestone.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.5.1 |4.5.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug debug/44645] [4.5 Regression] wrong debug info for nested typedef
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
` (4 preceding siblings ...)
2010-07-31 9:35 ` rguenth at gcc dot gnu dot org
@ 2010-08-19 12:20 ` redi at gcc dot gnu dot org
2010-08-19 12:22 ` redi at gcc dot gnu dot org
` (5 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: redi at gcc dot gnu dot org @ 2010-08-19 12:20 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from redi at gcc dot gnu dot org 2010-08-19 12:19 -------
*** Bug 45181 has been marked as a duplicate of this bug. ***
--
redi at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |nikolay at totalviewtech dot
| |com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug debug/44645] [4.5 Regression] wrong debug info for nested typedef
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
` (5 preceding siblings ...)
2010-08-19 12:20 ` redi at gcc dot gnu dot org
@ 2010-08-19 12:22 ` redi at gcc dot gnu dot org
2010-08-19 12:26 ` [Bug debug/44645] [4.5 Regression] missing debug info for pointer types redi at gcc dot gnu dot org
` (4 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: redi at gcc dot gnu dot org @ 2010-08-19 12:22 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from redi at gcc dot gnu dot org 2010-08-19 12:22 -------
*** Bug 45334 has been marked as a duplicate of this bug. ***
--
redi at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andre dot poenitz at nokia
| |dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug debug/44645] [4.5 Regression] missing debug info for pointer types
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
` (6 preceding siblings ...)
2010-08-19 12:22 ` redi at gcc dot gnu dot org
@ 2010-08-19 12:26 ` redi at gcc dot gnu dot org
2010-08-19 12:32 ` redi at gcc dot gnu dot org
` (3 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: redi at gcc dot gnu dot org @ 2010-08-19 12:26 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from redi at gcc dot gnu dot org 2010-08-19 12:26 -------
(adjusting title to be more general)
testcase from dup Bug 45181
struct S { int f(S*); };
int S::f(S* p)
{
return 0;
}
int main()
{
S s;
return s.f(&s);
}
within S::f p has type void*
Tom, CCing you as you've correctly identified this as a GCC 4.5 bug at
http://gcc.gnu.org/ml/libstdc++/2010-06/msg00159.html and
http://sourceware.org/bugzilla/show_bug.cgi?id=11639
--
redi at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tromey at gcc dot gnu dot
| |org
Known to fail|4.5.0 |4.5.0 4.5.1
Summary|[4.5 Regression] wrong debug|[4.5 Regression] missing
|info for nested typedef |debug info for pointer types
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug debug/44645] [4.5 Regression] missing debug info for pointer types
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
` (7 preceding siblings ...)
2010-08-19 12:26 ` [Bug debug/44645] [4.5 Regression] missing debug info for pointer types redi at gcc dot gnu dot org
@ 2010-08-19 12:32 ` redi at gcc dot gnu dot org
2010-09-18 13:21 ` redi at gcc dot gnu dot org
` (2 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: redi at gcc dot gnu dot org @ 2010-08-19 12:32 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from redi at gcc dot gnu dot org 2010-08-19 12:32 -------
testcase from Bug 45334 reduced to a single file:
struct Base
{
virtual ~Base();
};
Base::~Base() {}
struct Derived : Base
{
virtual ~Derived();
void foo();
};
Derived::~Derived() {}
void Derived::foo()
{
Base *b = this;
Base &br = *b;
}
int main()
{
Derived d;
d.foo();
Base *b = &d;
}
Within Derived::foo b has type void*
Breakpoint 1, Derived::foo (this=0x7fffffffe5f0) at bug.cc:18
18 Base *b = this;
(gdb) ptype b
type = void *
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug debug/44645] [4.5 Regression] missing debug info for pointer types
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
` (8 preceding siblings ...)
2010-08-19 12:32 ` redi at gcc dot gnu dot org
@ 2010-09-18 13:21 ` redi at gcc dot gnu dot org
2010-09-18 13:26 ` hjl dot tools at gmail dot com
2010-09-18 14:13 ` hjl dot tools at gmail dot com
11 siblings, 0 replies; 13+ messages in thread
From: redi at gcc dot gnu dot org @ 2010-09-18 13:21 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from redi at gcc dot gnu dot org 2010-09-18 13:20 -------
*** Bug 45717 has been marked as a duplicate of this bug. ***
--
redi at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |charlet at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug debug/44645] [4.5 Regression] missing debug info for pointer types
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
` (9 preceding siblings ...)
2010-09-18 13:21 ` redi at gcc dot gnu dot org
@ 2010-09-18 13:26 ` hjl dot tools at gmail dot com
2010-09-18 14:13 ` hjl dot tools at gmail dot com
11 siblings, 0 replies; 13+ messages in thread
From: hjl dot tools at gmail dot com @ 2010-09-18 13:26 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from hjl dot tools at gmail dot com 2010-09-18 13:26 -------
This is caused by revision 154354:
http://gcc.gnu.org/ml/gcc-cvs/2009-11/msg00575.html
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at redhat dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug debug/44645] [4.5 Regression] missing debug info for pointer types
2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
` (10 preceding siblings ...)
2010-09-18 13:26 ` hjl dot tools at gmail dot com
@ 2010-09-18 14:13 ` hjl dot tools at gmail dot com
11 siblings, 0 replies; 13+ messages in thread
From: hjl dot tools at gmail dot com @ 2010-09-18 14:13 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from hjl dot tools at gmail dot com 2010-09-18 14:13 -------
*** This bug has been marked as a duplicate of 43628 ***
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44645
^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2010-09-18 14:13 UTC | newest]
Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
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2010-06-23 10:53 [Bug c++/44645] New: [4.5 Regression] wrong debug info for nested typedef redi at gcc dot gnu dot org
2010-06-24 21:32 ` [Bug c++/44645] " rguenth at gcc dot gnu dot org
2010-06-24 22:04 ` rguenth at gcc dot gnu dot org
2010-07-13 11:54 ` [Bug debug/44645] " redi at gcc dot gnu dot org
2010-07-21 15:50 ` redi at gcc dot gnu dot org
2010-07-31 9:35 ` rguenth at gcc dot gnu dot org
2010-08-19 12:20 ` redi at gcc dot gnu dot org
2010-08-19 12:22 ` redi at gcc dot gnu dot org
2010-08-19 12:26 ` [Bug debug/44645] [4.5 Regression] missing debug info for pointer types redi at gcc dot gnu dot org
2010-08-19 12:32 ` redi at gcc dot gnu dot org
2010-09-18 13:21 ` redi at gcc dot gnu dot org
2010-09-18 13:26 ` hjl dot tools at gmail dot com
2010-09-18 14:13 ` hjl dot tools at gmail dot com
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