[Buildroot] [Bug 7208] New: Glibc C++ aplications crash if they use exceptions.
bugzilla at busybox.net
bugzilla at busybox.net
Sun Jun 15 10:29:22 UTC 2014
https://bugs.busybox.net/show_bug.cgi?id=7208
Summary: Glibc C++ aplications crash if they use exceptions.
Product: buildroot
Version: 2014.05
Platform: PC
OS/Version: Linux
Status: NEW
Severity: critical
Priority: P5
Component: Other
AssignedTo: unassigned at buildroot.uclibc.org
ReportedBy: kwrzalik at gmail.com
CC: buildroot at uclibc.org
Estimated Hours: 0.0
I'm using a toolchain with glibc and the following simple program crashes:
#include <cstdio>
int main() {
try {
throw 42;
} catch (int x) {
printf("catch %d\n", x);
}
}
with the following backtrace:
#0 0xb7747a92 in ?? () from /lib/ld-linux.so.2
#1 0xb74ac6b8 in raise () from /lib/libc.so.6
#2 0xb74adbae in abort () from /lib/libc.so.6
#3 0xb763903a in ?? () from /lib/libgcc_s.so.1
#4 0xb763936b in _Unwind_RaiseException () from /lib/libgcc_s.so.1
#5 0xb76d0304 in __cxa_throw () from /usr/lib/libstdc++.so.6
#6 0x080486c1 in main ()
when run on the host with proper ld-linux.so and run paths the stack trace is
as follows:
#0 0xb7fdc424 in __kernel_vsyscall ()
#1 0xb7d4073f in raise () from
/opt/gnl/usr/i686-gnl-linux-gnu/sysroot/lib/libc.so.6
#2 0xb7d41c5e in abort () from
/opt/gnl/usr/i686-gnl-linux-gnu/sysroot/lib/libc.so.6
#3 0xb7ecf0d9 in uw_init_context_1 (context=context at entry=0xbfffe680,
outer_cfa=outer_cfa at entry=0xbfffe860, outer_ra=0xb7f66424
<__cxxabiv1::__cxa_throw(void*, std:
:type_info*, void (*)(void*))+97>) at ../../../libgcc/unwind-dw2.c:1567
#4 0xb7ecf40a in _Unwind_RaiseException (exc=0x804a048) at
../../../libgcc/unwind.inc:88
#5 0xb7f66424 in __cxxabiv1::__cxa_throw (obj=0x804a068, tinfo=0x8049e50
<_ZTIi@@CXXABI_1.3>, dest=0x0) at
../../../../libstdc++-v3/libsupc++/eh_throw.cc:82
#6 0x08048924 in main () at dupa.cpp:8
In the discussion with tom_kos and wbx on IRC we managed to pin the problem
libgcc_s.so. The problem only appears when linking with dynamic libgcc_s.so. If
the program is compiled with -static-libgcc it runs correctly.
--
Configure bugmail: https://bugs.busybox.net/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
More information about the buildroot
mailing list