Re: ld crashing at method names containing '__U'

[Ian Lance Taylor]

Karl Pitrich <address@hidden> writes:

> my code contains a method "GetTypeDefinition__UserRoleList()".
> 
> when linking a .so, the linker segfaults.
> 
> we traced the problem to:
> 
> demangler/include/bits/demangle.h:
>   session<Allocator>::decode_unicode()
> 
> 
> the code always check for a valid hex digit after __U.
> 
> is this a sane thing to do for method names?
> (is that becasue of java? c/c++ method names cannot contain unicode
> characters, afaik)
> 
> 
> a) the linker should not segfault, but produce an error at this point.
> 
> b) checking of unicode char occurences should be ommited for method
> names. (?)

As far as I know, this should never happen with the standard GNU
binutils, as they never use that version of the demangler.  It's
possible that it would happen with some versions of the GNU/Linux
binutils.  For that, you should send a bug report to the bug reporting
address listed by ld --help, probably address@hidden

In any case, this problem should be fixed with the next release of the
GNU binutils, which use completely different demangler code.

Ian