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* [Bug c++/29602] New: cant use typedef class name of a baseclass
@ 2022-09-22 16:06 blarsen at redhat dot com
2022-09-27 18:12 ` [Bug c++/29602] " keiths at redhat dot com
2022-10-03 16:04 ` blarsen at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: blarsen at redhat dot com @ 2022-09-22 16:06 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29602
Bug ID: 29602
Summary: cant use typedef class name of a baseclass
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: c++
Assignee: unassigned at sourceware dot org
Reporter: blarsen at redhat dot com
Target Milestone: ---
Consider the following code:
```
class base{
public:
int x;
};
typedef base tbase;
class derived: public base{
public:
int y;
};
int main(){
derived der;
der.y = 0;
der.tbase::x = 1;
return der.tbase::x;
}
```
g++ is able to compile it with no problems, but in GDB I get:
(gdb)
17 return der.tbase::x;
(gdb) print der.base::x
$1 = 1
(gdb) print der.tbase::x
A syntax error in expression, near `'.
GDB should be able to resolve the typedef in the user expression and find the
correct member.
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* [Bug c++/29602] cant use typedef class name of a baseclass
2022-09-22 16:06 [Bug c++/29602] New: cant use typedef class name of a baseclass blarsen at redhat dot com
@ 2022-09-27 18:12 ` keiths at redhat dot com
2022-10-03 16:04 ` blarsen at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: keiths at redhat dot com @ 2022-09-27 18:12 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29602
Keith Seitz <keiths at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |keiths at redhat dot com
--- Comment #1 from Keith Seitz <keiths at redhat dot com> ---
(In reply to B. Larsen from comment #0)
> g++ is able to compile it with no problems, but in GDB I get:
> (gdb)
> 17 return der.tbase::x;
> (gdb) print der.base::x
> $1 = 1
> (gdb) print der.tbase::x
> A syntax error in expression, near `'.
I think part of the problem is that the typedef is omitted
from the debuginfo?
Locally:
(gdb) ptype tbase
No symbol "tbase" in current context.
Additionally,
$ readelf -w 29602 | grep tbase
$
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* [Bug c++/29602] cant use typedef class name of a baseclass
2022-09-22 16:06 [Bug c++/29602] New: cant use typedef class name of a baseclass blarsen at redhat dot com
2022-09-27 18:12 ` [Bug c++/29602] " keiths at redhat dot com
@ 2022-10-03 16:04 ` blarsen at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: blarsen at redhat dot com @ 2022-10-03 16:04 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29602
B. Larsen <blarsen at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from B. Larsen <blarsen at redhat dot com> ---
you are correct, and fixing it so the typedef shows up does make GDB work. I
guess this was never a bug after all...
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end of thread, other threads:[~2022-10-03 16:04 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2022-09-22 16:06 [Bug c++/29602] New: cant use typedef class name of a baseclass blarsen at redhat dot com
2022-09-27 18:12 ` [Bug c++/29602] " keiths at redhat dot com
2022-10-03 16:04 ` blarsen at redhat dot com
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