Re: [PATCH ver 2] PowerPC: fix _Float128 type output string

[Tom Tromey <tom@tromey.com>]

>>>>> "Carl" == Carl Love via Gdb-patches <gdb-patches@sourceware.org> writes:

>> However, doesn't copy_type also copy the TYPE_FLOATFORMAT field?
>> So where would this get reset?

Carl> the GCC-generated dwarf info including the hack provides
Carl> the following two type records:

Carl> 1) name: _Float128
Carl>    type: base floating-point type (TYPE_CODE_FLT)
Carl>      size: 16
Carl>      format: floatformats_ieee_quad

Carl> and

Carl> 2) name: "long double"
Carl>    type: typedef (TYPE_CODE_TYPEDEF)
Carl>      target-type: _Float128 (i.e. type 1) above)

Carl> What the patch does is to keep 1) as-is, and replace 2) by

Carl> 2') name: "long double"
Carl>     type: base floating-point type (TYPE_CODE_FLT)
Carl>       size: 16
Carl>       format: floatformats_ieee_quad

Carl> where the name is taken from 2), and the rest of the
Carl> record is taken from 1). 

Sorry for going in circles on this, but I still don't really get it.

From what I can see, the difference between (2) and (2') is just that
one is a typedef and one is not.  Where does this matter?

Tom