[Bug binutils/25180] Slowness in cplus_demangle()

[nickc at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25180

Nick Clifton <nickc at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |nickc at redhat dot com

--- Comment #1 from Nick Clifton <nickc at redhat dot com> ---
Hi Tim,

  Why is this a bug ?  You give the demangler a pathological name and it
  takes a long time for it to process it.  Where is the mystery ?

Cheers
  Nick

PS.  You do not need to use a custom compiled program to see this behaviour,
you can just pass the mangled name to the cxxfilt program:

  % cxxfilt
_ZZ1_DOaaaa1zmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm1Dclaa1D1VEE1VE2zo

_(V
noexcept((z&&((((((((((((((((((((((((((((((((((D--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--)--))&&((D&&V)())))::zo

 Time spent in user mode   (CPU seconds) : 125.645
 Total time         (wall clock seconds) : 2:05.74
 CPU utilisation    (CPU time/wall time) : 99.9%
 Maximum memory use          (kilobytes) : 2344

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