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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/18129] Segfault when reading symbols
Date: Wed, 18 Mar 2015 10:50:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=18129

--- Comment #5 from Keith Seitz <keiths at redhat dot com> ---
Thanks -- that does it for me.

This is another demangler bug, on the symbol:

_ZN6Gorgon6String2ToIfEENSt9enable_ifIXaantsrSt16is_constructibleIT_ISsEE5valuentsrDTcl26gorgon__enum_trait_locatorcvS4__EEE14isupgradedenumES4_E4typeERKSs

Fedora 21 gdb:
(gdb) set lang c++
(gdb) maint demangle
_ZN6Gorgon6String2ToIfEENSt9enable_ifIXaantsrSt16is_constructibleIT_ISsEE5valuentsrDTcl26gorgon__enum_trait_locatorcvS4__EEE14isupgradedenumES4_E4typeERKSs
Segmentation fault (core dumped)

HEAD:
(gdb) set lang c++
(gdb) demangle
_ZN6Gorgon6String2ToIfEENSt9enable_ifIXaantsrSt16is_constructibleIT_ISsEE5valuentsrDTcl26gorgon__enum_trait_locatorcvS4__EEE14isupgradedenumES4_E4typeERKSs
../../src/gdb/cp-support.c:1593: demangler-warning: unable to demangle
'_ZN6Gorgon6String2ToIfEENSt9enable_ifIXaantsrSt16is_constructibleIT_ISsEE5valuentsrDTcl26gorgon__enum_trait_locatorcvS4__EEE14isupgradedenumES4_E4typeERKSs'
(demangler failed with signal 11)

c++filt 2.24:
$ c++filt
_ZN6Gorgon6String2ToIfEENSt9enable_ifIXaantsrSt16is_constructibleIT_ISsEE5valuentsrDTcl26gorgon__enum_trait_locatorcvS4__EEE14isupgradedenumES4_E4typeERKSs
std::enable_if<(!std::is_constructible<float<std::basic_string<char,
std::char_traits<char>, std::allocator<char> > > >::value)&&(!decltype
(gorgon__enum_trait_locator((float)()))::isupgradedenum), float>::type
Gorgon::String::To<float>(std::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&)

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