[Bug middle-end/57748] [4.8/4.9 Regression] ICE when expanding assignment to unaligned zero-sized array

["david.abdurachmanov at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57748

David Abdurachmanov <david.abdurachmanov at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |david.abdurachmanov at gmail dot c
                   |                            |om

--- Comment #17 from David Abdurachmanov <david.abdurachmanov at gmail dot com> ---
Just for the record.

I hit the same bug on Cortex-A9 NEON GCC 4.8.1 hard floats, while compiling
scipy 0.8.0 RPM. There was not issue on 4.8.0 and pre-4.9.0 w/o NEON as FPU.

scipy/spatial/ckdtree.c: In function
'__pyx_f_5scipy_7spatial_7ckdtree_7cKDTree___query':
scipy/spatial/ckdtree.c:4194:66: internal compiler error: in expand_assignment,
at expr.c:4761
         (__pyx_v_inf2->side_distances[__pyx_v_inode->split_dim]) =
__pyx_f_5scipy_7spatial_7ckdtree_dabs((__pyx_v_inode->split -
(__pyx_v_x[__pyx_v_inode->split_dim])));
                                                                  ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
error: Command "gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv
-O3 -Wall -Wstrict-prototypes -fPIC
-I/build/davidlt/481-ext/a/fc18_armv7hl_gcc481/external/py2-numpy/1.6.1/lib/python2.7/site-packages/numpy/core/include
-I/build/davidlt/481-ext/a/fc18_armv7hl_gcc481/external/python/2.7.3/include/python2.7
-c scipy/spatial/ckdtree.c -o
build/temp.linux-armv7l-2.7/scipy/spatial/ckdtree.o" failed with exit status 1

### GCC configuration ###

Target: armv7hl-redhat-linux-gnueabi
Configured with: ../configure
--prefix=/build/davidlt/481/b/tmp/BUILDROOT/4464b4bee054158584ab26d304d9b1a8/opt/cmssw/fc18_armv7hl_gcc481/external/gcc/4.8.1
--disable-multilib --disable-nls --with-zlib=no
--enable-languages=c,c++,fortran --enable-gold=yes --enable-ld=default
--enable-lto
--with-gmp=/build/davidlt/481/b/tmp/BUILDROOT/4464b4bee054158584ab26d304d9b1a8/opt/cmssw/fc18_armv7hl_gcc481/external/gcc/4.8.1
--with-mpfr=/build/davidlt/481/b/tmp/BUILDROOT/4464b4bee054158584ab26d304d9b1a8/opt/cmssw/fc18_armv7hl_gcc481/external/gcc/4.8.1
--with-mpc=/build/davidlt/481/b/tmp/BUILDROOT/4464b4bee054158584ab26d304d9b1a8/opt/cmssw/fc18_armv7hl_gcc481/external/gcc/4.8.1
--with-isl=/build/davidlt/481/b/tmp/BUILDROOT/4464b4bee054158584ab26d304d9b1a8/opt/cmssw/fc18_armv7hl_gcc481/external/gcc/4.8.1
--with-cloog=/build/davidlt/481/b/tmp/BUILDROOT/4464b4bee054158584ab26d304d9b1a8/opt/cmssw/fc18_armv7hl_gcc481/external/gcc/4.8.1
--enable-checking=release --build=armv7hl-redhat-linux-gnueabi
--host=armv7hl-redhat-linux-gnueabi --enable-libstdcxx-time=rt
--enable-bootstrap --enable-threads=posix --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-gnu-unique-object
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array
--enable-linker-build-id --disable-build-with-cxx
--disable-build-poststage1-with-cxx --with-cpu=cortex-a9 --with-tune=cortex-a9
--with-arch=armv7-a --with-float=hard --with-fpu=neon --with-abi=aapcs-linux
--disable-sjlj-exceptions --enable-shared CC='gcc -fPIC' CXX='c++ -fPIC'
CPP=cpp CXXCPP='c++ -E'
Thread model: posix