Re: debug information

[Paul Pogonyshev <pogonyshev at gmx dot net>]

Benjamin Kosnik wrote:
> 
> > In GDB, functions that accept std::string as argument are shown as
> > `function_name(std::string)', not as `function_name(std::basic_string<char,...>)'.
> > As far as I can see, this is written like this in the debug information, not just
> > simplified by GDB.  So it is a feature of GNU libstdc++ or GCC itself.  Is there
> > a way to do the same for my own code?  This way debugging would be much easier...
> 
> Sadly, std::string is a special case for many things, as it has a
> unique mangling as part of the IA 64 C++ ABI. It'd probably be better
> to discusses this more generally, without std::string's tricks.
> 
> If you look at the following example:
> 
> [...]
> 
> And compile it with -g3 -O0 on linux, you'll see this in the debug info:
> 
> <1><f011>: Abbrev Number: 2 (DW_TAG_typedef)
>      DW_AT_name        : ipod	
> 
> then, the type on bar as above in gdb is:
> 
> (gdb) ptype bar
> type = void (ipod)
> 
> and
> 
> (gdb) ptype ipod
> type = struct basic_pod<int> {
>     int _M_data;
> }
> 
> So, I guess I would have to tell you to use a DWARF debuginfo
> toolchain, and use the above flags with typedefs? 
> 
> Not quite sure what you are getting at, but hopefully this answers your
> question. 

But still function names include full type name: `b 'bar(basic_pod<int>)''.
Not much of a problem in this case, but sometimes the full name is very
long...

Paul