https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62231
Bug ID: 62231
Summary: Exception handling broken on
powerpc-e500v2-linux-gnuspe
Product: gcc
Version: 4.8.3
Status: UNCONFIRMED
Severity: critical
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: manfred.rudigier at omicron dot at
Problem:
--------
The GCC exception handling mechanism for powerpc-e500v2-linux-gnuspe seems to
be broken. Every programs abort as soon as the first exception is thrown. I can
confirm that the exception handling works on at least 4.6.3 and 4.7.4, however
on 4.8.3 it does not.
Example program to reproduce the problem:
-----------------------------------------
#include <exception>
#include <stdio.h>
void doThrow()
{
printf("Throwing now\n");
throw std::exception();
}
int main(int argc, char **argv)
{
try {
doThrow();
} catch (std::exception& e) {
printf("Caught exception\n");
}
return 0;
}
GDB output:
-----------
Program received signal SIGABRT, Aborted.
0x0fc0c858 in raise () from /lib/libc.so.6
(gdb) bt
#0 0x0fc0c858 in raise () from /lib/libc.so.6
#1 0x0fc117c4 in abort () from /lib/libc.so.6
#2 0x0fd78250 in ?? () from /lib/libgcc_s.so.1
#3 0x0fd78960 in _Unwind_RaiseException () from /lib/libgcc_s.so.1
#4 0x0ff33e0c in __cxa_throw () from /lib/libstdc++.so.6
#5 0x100007dc in doThrow() ()
#6 0x10000800 in main ()
(gdb)
GCC version:
------------
The compiler has been compiled with crosstool-ng:
./powerpc-e500v2-linux-gnuspe-gcc -v
Using built-in specs.
COLLECT_GCC=./powerpc-e500v2-linux-gnuspe-gcc
COLLECT_LTO_WRAPPER=/opt/x-tools/tron/4.8.3/powerpc-e500v2-linux-gnuspe/bin/../libexec/gcc/powerpc-e500v2-linux-gnuspe/4.8.3/lto-wrapper
Target: powerpc-e500v2-linux-gnuspe
Configured with: /home/manrud00/crosstool-ng/.build/src/gcc-4.8.3/configure
--build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu
--target=powerpc-e500v2-linux-gnuspe
--prefix=/home/manrud00/x-tools/powerpc-e500v2-linux-gnuspe
--with-sysroot=/home/manrud00/x-tools/powerpc-e500v2-linux-gnuspe/powerpc-e500v2-linux-gnuspe/sysroot
--enable-languages=c,c++ --with-cpu=8548 --with-tune=8548
--with-pkgversion='crosstool-NG hg+default-99029fac116b'
--disable-sjlj-exceptions --enable-__cxa_atexit --disable-libmudflap
--disable-libgomp --disable-libssp --disable-libquadmath
--disable-libquadmath-support
--with-gmp=/home/manrud00/crosstool-ng/.build/powerpc-e500v2-linux-gnuspe/buildtools
--with-mpfr=/home/manrud00/crosstool-ng/.build/powerpc-e500v2-linux-gnuspe/buildtools
--with-mpc=/home/manrud00/crosstool-ng/.build/powerpc-e500v2-linux-gnuspe/buildtools
--with-isl=/home/manrud00/crosstool-ng/.build/powerpc-e500v2-linux-gnuspe/buildtools
--with-cloog=/home/manrud00/crosstool-ng/.build/powerpc-e500v2-linux-gnuspe/buildtools
--with-libelf=/home/manrud00/crosstool-ng/.build/powerpc-e500v2-linux-gnuspe/buildtools
--with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm'
--enable-threads=posix --disable-nls --disable-multilib
--with-local-prefix=/home/manrud00/x-tools/powerpc-e500v2-linux-gnuspe/powerpc-e500v2-linux-gnuspe/sysroot
--enable-c99 --enable-long-long --enable-e500_double --with-long-double-128
Thread model: posix
gcc version 4.8.3
