RE: GC seems to kill process

[Andrew Haley <aph at redhat dot com>]

Boehm, Hans writes:
 > Does the system log say anything more useful?
 > 
 > This often means that a SIGSEGV was generated while SIGSEGV was blocked.
 > A semi-friendly kernel would at least put the PC value in the system
 > log, which might give us some chance at determining what's happening,
 > possibly by setting a breakpoint in a debugger just before this happens.

This may be related to http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13212.

Andrew.



 > > -----Original Message-----
 > > From: java-owner@gcc.gnu.org [mailto:java-owner@gcc.gnu.org] 
 > > On Behalf Of Andi Vajda
 > > Sent: Wednesday, March 22, 2006 8:08 AM
 > > To: java@gcc.gnu.org
 > > Cc: Andi Vajda
 > > Subject: GC seems to kill process
 > > 
 > > 
 > > On my gentoo Linux system, I built gcc 4.1.0 configured with:
 > >    ../gcc-4.1.0/configure --enable-threads=posix 
 > > --prefix=/usr/local/gcc-4.1.0
 > >                           --enable-languages=c,c++,java
 > > 
 > > Whenever I run my compiled java code, as soon as the garbage 
 > > collector kicks in, the process is "Killed". The easiest way 
 > > for me to reproduce this is to simply invoke System.gc():
 > > 
 > > > python
 > > Python 2.4 (#2, Dec 20 2004, 17:30:16)
 > > [GCC 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, 
 > > pie-8.7.6)] on linux2 Type "help", "copyright", "credits" or 
 > > "license" for more information.
 > > >>> import PyLucene
 > > >>> PyLucene.System.gc()
 > > >>> Killed
 > > 
 > > Each of the .jar files making up PyLucene's java code are 
 > > compiled with:
 > >    /usr/local/gcc-4.1.0/bin/gcj --encoding=UTF-8 -O2 -fPIC -c -o
 > >    release/lucene.o
 > >    
 > > lucene-java-2.0-rc1-dev-382522/build/lucene-core-2.0-rc1-dev-3
 > > 82522.jar
 > > 
 > > The final executable, _PyLucene.so, is produced with:
 > > 
 > > /usr/local/gcc-4.1.0/bin/g++ -shared -o release/_PyLucene.so 
 > > -O2 -fPIC -DPYLUCENE_VER="'2.0rc1-1'" 
 > > -DLUCENE_VER="'2.0-rc1-dev-382522'" 
 > > -Ilucene-java-2.0-rc1-dev-382522/build/classes/java
 > > -Ilucene-java-2.0-rc1-dev-382522/build/contrib/highlighter/cla
 > > sses/java
 > > -Ilucene-java-2.0-rc1-dev-382522/build/contrib/snowball/classes/java
 > > -Ilucene-java-2.0-rc1-dev-382522/build/contrib/analyzers/classes/java
 > > -Ilucene-java-2.0-rc1-dev-382522/build/contrib/regex/classes/java
 > > -Irelease/classes -I/usr/local/include/python2.4 
 > > -I/usr/local/gcc-4.1.0/include PyLucene_wrap.cxx 
 > > release/lucene.o release/snowball.o release/highlighter.o 
 > > release/analyzers.o release/regex.o release/regex.cpp.o 
 > > release/util.java.o release/util.cpp.o release/io.java.o 
 > > release/io.cpp.o release/store.java.o release/store.cpp.o 
 > > release/search.java.o release/search.cpp.o 
 > > release/queryParser.java.o release/queryParser.cpp.o 
 > > release/analysis.java.o release/analysis.cpp.o 
 > > release/highlight.java.o release/highlight.cpp.o 
 > > -L/usr/local/gcc-4.1.0/lib -lgcj
 > > 
 > > When I do the very same with gcc 3.4.4 it works fine.
 > > What's changed ?
 > > What am I doing wrong ?
 > > 
 > > Thanks !
 > > 
 > > Andi..
 > >