[Bug libstdc++/68802] New: seg fault when non-main thread calls std::current_exception ARMv7-A

["philip.deegan at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68802

            Bug ID: 68802
           Summary: seg fault when non-main thread calls
                    std::current_exception ARMv7-A
           Product: gcc
           Version: 5.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: philip.deegan at gmail dot com
  Target Milestone: ---

Created attachment 36966
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36966&action=edit
Simple seg faulting init

Segfault occurs in libstdc++-v3/libsupc++/eh_ptr.cc line 190:
__cxa_exception *header = globals->caughtExceptions;


Attached file compiled with:
g++ main.cpp -o test_static -Wall -fmessage-length=0 -std=c++1y -g3
-Wl,--whole-archive -lpthread -Wl,--no-whole-archive -static

Cross compiler is:
g++ -v
Using built-in specs.
COLLECT_GCC=/path/to/gcc_5.3_ARMv7-A/bin/g++
COLLECT_LTO_WRAPPER=/path/to/gcc_5.3_ARMv7-A/libexec/gcc/arm-linux-gnueabihf/5.3.0/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../tar/gcc-5.3.0/configure --prefix=/path/to/gcc_5.3_ARMv7-A
--enable-languages=c,c++ --target=arm-linux-gnueabihf --disable-nls
--with-arch=armv7-a
Thread model: posix
gcc version 5.3.0 (GCC) 

Only appears to occur in when cross compiled. native shared/static (gcc
4.9.2-10) does not occur.

Having trouble testing a shared cross compiled binary due to what I imagine is
libc/ld version mismatch.

My distro is Mint 17.1, ARMv7-A is debian (jessie) vanilla

For complete cross compiler build see:
https://raw.githubusercontent.com/Dekken/scripts/master/gcc-5.3.0_x86_64_TO_ARMv7-A.sh