BZ #183: make check fails with clang (3.0) + optimizations

Status fields:

make check fails if cacao is configured with CC=clang CXX=clang++ on Ubuntu 12.04
(precise). Steps to reproduce:

On a (fresh) Ubuntu 12.04 install clang and all other dependencies. Build and install
GNU classpath (gcc). Configure cacao as follows:

$ clang --version
Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM 3.0)
Target: x86_64-pc-linux-gnu
Thread model: posix

$ CC=clang CXX=clang++ ../configure --prefix=$HOME/cacao/install/cacao --with-java-
runtime-library-prefix=$CLASSPATHPREFIX

$ make
$ make check

(error.log attached)

However if --disable-optimizations is added everything is fine.

$ CC=clang CXX=clang++ ../configure --prefix=$HOME/cacao/install/cacao --with-java-
runtime-library-prefix=$CLASSPATHPREFIX --disable-optimizations

Also tried other clang version (>3.0) on Ubuntu with the same result. Had no problems
with clang 2.9 on Debian.

Created an attachment (id=83)
make check error log

Update: It seems that the problem is cause by some optimization applied to
src/vm/jit/builtin.cpp (and src/vm/jit/builtintable.inc). If this file is compiled with
-O0 everything is fine. Further investigation is required...

Another update: the issue does not occur when using the current trunk version of
clang/llvm. The question is due to a bug fixed in clang/llvm or by accident which would
imply that there is still a bug CACAO.

The issue does not occur in clang/llvm 3.4. Lets assume it was an llvm bug and close
this one.