gcj segfaults on i686/x86_64-apple-darwin*

[Jack Howarth <howarth at bromo dot med dot uc dot edu>]

    Do any of the gcc java developers have access to intel darwin?
We are seeing segfaults on i686-apple-darwin9/10 and x86_64-apple-darwin9/10
when compiling code like...

public class testme { 
  public static void main(String args[]){ 
    System.out.println("Hello"); 
  } 
} 

with "gcj --main=testme -O testme.java" which produces segfaults of the
form...

gcj: Internal error: Abort trap (program ecj1)
Please submit a full bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

This failure is showing up on x86_64-apple-darwin9/10 for gcc 4.4.2
and gcc trunk. Interestingly, i686-apple-darwin9 doesn't show the
segfault for gcc 4.4.2 but does for gcc trunk. Both gcc 4.4.2 and
gcc trunk show the segfault for i686-apple-darwin10. The gcc compiler
with ftp://sourceware.org/pub/java/ecj-latest.jar in the top level
of the build directory to produce the ecj1 binary. The gcc configurations
are of the form...

../gcc-4.5-20091107/configure --prefix=/sw --prefix=/sw/lib/gcc4.5
--mandir=/sw/share/man --infodir=/sw/share/info
--enable-languages=c,c++,fortran,objc,java --with-gmp=/sw
--with-libiconv-prefix=/sw --with-ppl=/sw --with-cloog=/sw --with-system-zlib
--x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib
--disable-libjava-multilib --with-arch=nocona --with-tune=generic
--build=i686-apple-darwin9 --host=i686-apple-darwin9
--target=i686-apple-darwin9

This issue has been filed as PR41991.
            Jack
ps Using -v to figure out how ecj1 is called, I obtained the following backtrace
under gcc trunk...

gdb /sw/lib/gcc4.5/libexec/gcc/i686-apple-darwin9/4.5.0/ecj1
...
(gdb) r testme.java -fbootclasspath=./:/sw/lib/gcc4.5/share/java/libgcj-4.5.0.jar -fsource=1.5 -ftarget=1.5 -fzip-dependency /var/folders/1C/1CdoNxmNFHyOIjNBLNuJh++++TM/-Tmp-//ccCFc8VX.zip -fzip-target /var/folders/1C/1CdoNxmNFHyOIjNBLNuJh++++TM/-Tmp-//ccBrG88S.jar
Starting program: /sw/lib/gcc4.5/libexec/gcc/i686-apple-darwin9/4.5.0/ecj1 testme.java -fbootclasspath=./:/sw/lib/gcc4.5/share/java/libgcj-4.5.0.jar -fsource=1.5 -ftarget=1.5 -fzip-dependency /var/folders/1C/1CdoNxmNFHyOIjNBLNuJh++++TM/-Tmp-//ccCFc8VX.zip -fzip-target /var/folders/1C/1CdoNxmNFHyOIjNBLNuJh++++TM/-Tmp-//ccBrG88S.jar
Reading symbols for shared libraries ++++.+. done

Program received signal SIGABRT, Aborted.
0x94cc2e42 in __kill ()
(gdb) bt
#0  0x94cc2e42 in __kill ()
#1  0x94cc2e34 in kill$UNIX2003 ()
#2  0x94d3523a in raise ()
#3  0x94d41679 in abort ()
#4  0x038de502 in _Jv_Throw (value=<value temporarily unavailable, due to optimizations>) at ../../../gcc-4.5-20091107/libjava/exception.cc:128
#5  0x039359bb in _ZN4java4lang5Class7forNameEJPS1_PNS0_6StringES2_ (className=<value temporarily unavailable, due to optimizations>, caller=<value temporarily unavailable, due to optimizations>) at Class.java:133
Previous frame inner to this frame (gdb could not unwind past this frame)