Hello,
We are hitting an infinite recursion in "ld", eventually leading to a
stackoverflow and segfault, when using the --version-script option with a C++
symbol (which "forces" ld to demangle symbols).
This bug also affects our versions of c++filt and gdb.
Commands used:
$ /opt/imc/gcc-6.2.0/bin/g++ -fPIC -std=c++14 -O3 -ggdb -o main.cpp.o -c
main.cpp
$ /opt/imc/gcc-6.2.0/bin/g++ -fPIC -std=c++14 -shared -o libCrash.so main.cpp.o
-Wl,--version-script=simple.map
collect2: fatal error: ld terminated with signal 11 [Segmentation fault]
compilation terminated.
And:
$ c++filt
_ZSt7forwardIRP22XxxxxxxxXxxxxxxXxxxxxxI28XxxxxxxxXxxxXxxxXxxxXxxxxxxxZN3TBQ26XxxxxxxxXxxxXxxxXxxxxxxxxxINS2_14TBQXxxxXxxxxxxINS2_8TBQXxxxxINS2_12XxXxxXxxxxxxINS2_15XxxxxxxxXxxxxxxEEEEEEENS2_10TBQXxxxxxxEE5xxxxxEvEUlRT_RT0_PT1_E_Z28xxxxxxXxxxxxxxXxxxxxxXxxxxxxIS1_SJ_ESt10unique_ptrI31XxxxxxxxXxxxxxxXxxxxxxXxxxxxxxxISD_ESt14default_deleteISN_EESF_EUlR5XxxxxE_ZSK_IS1_SJ_ESQ_SF_EUlvE0_EEOSD_RNSt16remove_referenceISD_E4typeE
Segmentation fault
Versions used:
$ cat /etc/centos-release
CentOS Linux release 7.2.1511 (Core)
$ /opt/imc/gcc-6.2.0/bin/g++ --version
g++ (GCC) 6.2.0
$ c++filt --version
GNU c++filt version 2.23.52.0.1-55.el7 20130226
$ /opt/imc/gcc-6.2.0/bin/ld --version
GNU ld (GNU Binutils) 2.27
$ gdb --version
GNU gdb (GDB) Red Hat Enterprise Linux 7.10.50.20151113-33.el7
Notes:
The symbols reported in those bug reports do not crash my c++filt:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61233
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61460
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61805
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72822
However the symbol reported in this one does crash c++filt (although not ld):
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70909
Kind Regards,
Matthieu Monrocq
IMC financial markets | Strawinskylaan 377, WTC D-tower, 1077 XX Amsterdam |
www.imc.com<http://www.imc.nl/>
P +31 (0)20 798 8601 | E matthieu.monr...@imc.com<mailto:julien.leh...@imc.nl>
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#include <iostream>
extern "C" {
void _ZSt7forwardIRP22XxxxxxxxXxxxxxxXxxxxxxI28XxxxxxxxXxxxXxxxXxxxXxxxxxxxZN3TBQ26XxxxxxxxXxxxXxxxXxxxxxxxxxINS2_14TBQXxxxXxxxxxxINS2_8TBQXxxxxINS2_12XxXxxXxxxxxxINS2_15XxxxxxxxXxxxxxxEEEEEEENS2_10TBQXxxxxxxEE5xxxxxEvEUlRT_RT0_PT1_E_Z28xxxxxxXxxxxxxxXxxxxxxXxxxxxxIS1_SJ_ESt10unique_ptrI31XxxxxxxxXxxxxxxXxxxxxxXxxxxxxxxISD_ESt14default_deleteISN_EESF_EUlR5XxxxxE_ZSK_IS1_SJ_ESQ_SF_EUlvE0_EEOSD_RNSt16remove_referenceISD_E4typeE() {
std::cout << "Hello, World\n";
}
}
int main() {
_ZSt7forwardIRP22XxxxxxxxXxxxxxxXxxxxxxI28XxxxxxxxXxxxXxxxXxxxXxxxxxxxZN3TBQ26XxxxxxxxXxxxXxxxXxxxxxxxxxINS2_14TBQXxxxXxxxxxxINS2_8TBQXxxxxINS2_12XxXxxXxxxxxxINS2_15XxxxxxxxXxxxxxxEEEEEEENS2_10TBQXxxxxxxEE5xxxxxEvEUlRT_RT0_PT1_E_Z28xxxxxxXxxxxxxxXxxxxxxXxxxxxxIS1_SJ_ESt10unique_ptrI31XxxxxxxxXxxxxxxXxxxxxxXxxxxxxxxISD_ESt14default_deleteISN_EESF_EUlR5XxxxxE_ZSK_IS1_SJ_ESQ_SF_EUlvE0_EEOSD_RNSt16remove_referenceISD_E4typeE();
}
{ global:
extern "C++" {
__wrap_memcpy;
};
local: *;
};
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