Re: gdb/57

[Stuart Whitman <stu dot whitman at emergent-it dot com>]

The following reply was made to PR gdb/57; it has been noted by GNATS.

From: Stuart Whitman <stu.whitman@emergent-it.com>
To: angela@wonderslug.com
Cc: stu.whitman@dlva.emergent-IT.com,
 	gdb-gnats@sources.redhat.com, gdb-prs@sources.redhat.com
Subject: Re: gdb/57
Date: Mon, 15 Oct 2001 09:25:47 -0400

 Thanks Angela!
 
 It does appear to work. I will change our makefiles to use this option.
 
 Quick question, if this is the preferred debugging format for C++, why
 is it not the default when "g++ -g" is invoked?
 
 Stu
 
 Angela Marie Thomas wrote:
 > 
 > >  Description:
 > > In the following example two classes have a nested class with the same
 > > name. Gdb incorrectly prints the contents of the nested class.
 > 
 > Have you tried using dwarf-2 debugging?  My understanding is
 > that dwarf-2 debugging is generally preferred for C++ debugging.
 > In a couple of quick tests, compiling your source with -gdwarf-2
 > produced what look like expected results.  The following is using
 > gcc 2.95.1 and gdb 4.18.  I have had similar results with gcc 2.93,
 > gcc 2.96 and gdb 5.0.
 > 
 > (gdb) b main
 > Breakpoint 1 at 0x200127c: file main.cc, line 33.
 > (gdb) run
 > Starting program: /tmp/main.gdwarf-2
 > Breakpoint 1, main () at main.cc:33
 > 33      A a;
 > (gdb) n
 > 34      B b;
 > (gdb) n
 > 35      }
 > (gdb) ptype a.d_i
 > type = class I {
 >   public:
 >     int d_v;
 > 
 >     I & operator=(A::I const &);
 >     I(A::I const &);
 >     I(void);
 > } *
 > (gdb) ptype b.d_i
 > type = class I {
 >   public:
 >     double d_v;
 > 
 >     I & operator=(B::I const &);
 >     I(B::I const &);
 >     I(void);
 > } *
 > (gdb)
 > 
 > --
 > Angela Marie Thomas
 > angela@wonderslug.com
 
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