C++ Demangling

[Jan Beulich]

On 11.10.2019 09:16, kamlesh kumar wrote:
> Hi Devs,
> 
> I am looking into this bug
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84950
> 
> I could see that
> 
> $cat test
> _Q.__0
> $c++filt < test
> ::Q.(void)
> $c++filt -v
> GNU c++filt (GNU Binutils) 2.30
> =================================
> 
> With trunk c++filt
> 
> $c++filt < test
>   _Q.__0
> $c++filt -v
> GNU c++filt (GNU Binutils) 2.32
> 
> I am going through the demangling/mangling docs.
> and like to know
> which demangled name above is wrong ?

According to

2018-12-22  Jason Merrill  <jason@redhat.com>

	Remove support for demangling GCC 2.x era mangling schemes.
	* cplus-dem.c: Remove cplus_mangle_opname, cplus_demangle_opname,
	internal_cplus_demangle, and all subroutines.
	(libiberty_demanglers): Remove entries for ancient GNU (pre-3.0),
	Lucid, ARM, HP, and EDG demangling styles.
	(cplus_demangle): Remove 'work' variable.  Don't call
	internal_cplus_demangle.

demangling support for this old mangling scheme was simply removed.

Jan