An ICE with gfortran 4.6.1, optimization -O3, not with -O2.

[Toon Moene <toon at moene dot org>]

All,

The attached preprocessed Fortran source draws an Internal Compiler 
Error on x86_64-linux-gnu:

suedyn.F90: In function ‘suedyn’:
suedyn.F90:2100:0: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions.

using Debian Testing gfortran 4.6.1:

Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.6.1/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.6.1-4' 
--with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs 
--enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr 
--program-suffix=-4.6 --enable-shared --enable-multiarch 
--with-multiarch-defaults=x86_64-linux-gnu --enable-linker-build-id 
--with-system-zlib --libexecdir=/usr/lib/x86_64-linux-gnu 
--without-included-gettext --enable-threads=posix 
--with-gxx-include-dir=/usr/include/c++/4.6 
--libdir=/usr/lib/x86_64-linux-gnu --enable-nls --enable-clocale=gnu 
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin 
--enable-objc-gc --with-arch-32=i586 --with-tune=generic 
--enable-checking=release --build=x86_64-linux-gnu 
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.6.1 (Debian 4.6.1-4)

Does it also fail with a current build of the 4.6 branch on 
x86_64-linux-gnu ?

In that case I will open a PR.

Thanks for your help,

--
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
At home: http://moene.org/~toon/; weather: http://moene.org/~hirlam/
Progress of GNU Fortran: http://gcc.gnu.org/wiki/GFortran#news

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