https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84865
Bug ID: 84865
Summary: Regular expression regex_search falls into infinite
loop causing segfault on crayxc machines
Product: gcc
Version: 5.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: shaoqin2 at illinois dot edu
Target Milestone: ---
Using regex_search in a multi threaded environment on crayxc super computer
will cause infinite loop and segfault. g++ information is here
Target: x86_64-suse-linux
Configured with: ../cray-gcc-5.3.0/configure
--prefix=/opt/gcc/5.3.0/snos
--disable-nls --libdir=/opt/gcc/5.3.0/snos/lib
--enable-languages=c,c++,fortran
--with-gxx-include-dir=/opt/gcc/5.3.0/snos/include/g++
--with-slibdir=/opt/gcc/5.3.0/snos/lib
--with-system-zlib --enable-shared
--enable-__cxa_atexit
--build=x86_64-suse-linux
--with-ppl --with-cloog
Thread model: posix
gcc version 5.3.0 20151204 (Cray Inc.) (GCC)
uname -a
Linux edison11 4.4.103-92.56-default #1 SMP Wed Dec 27 16:24:31 UTC 2017
(2fd2155) x86_64 x86_64 x86_64 GNU/Linux
Command line to reproduce this segfault:
(.cpp file is not attached per guideline. Feel free to ask me to post it, it's
super short and simple, I extracted minimum error reproducing code)
g++ -std=c++11 -save-temps regex.cpp -lpthread
./a.out
Segmentation fault (core dumped)
