When trying to compile and link the attached file bug_lto.ii with LTO the link
process dies with the message "lto1: internal compiler error: Segmentation
fault"
Everything is fine if I do not use -flto for linking the shared library.
Command line that triggers the bug:
$ /home/martinkr/Programme/compilers/bin/g++ -flto -fPIC -o bug_lto.o -c
bug_lto.ii
$ /home/martinkr/Programme/compilers/bin/g++ -flto -fPIC -shared -o libdummy.so
bug_lto.o
lto1: internal compiler error: Segmentation fault
lto-wrapper: /home/martinkr/Programme/compilers/bin/g++ returned 1 exit status
collect2: lto-wrapper returned 1 exit status
$ /home/martinkr/Programme/compilers/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/home/martinkr/Programme/compilers/bin/g++
COLLECT_LTO_WRAPPER=/home/martinkr/Programme/compilers/libexec/gcc/x86_64-linux-gnu/4.5.1/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../configure --enable-languages=c,c++,fortran,objc,obj-c++
--prefix=/home/martinkr/Programme/compilers --enable-shared --enable-multiarch
--enable-linker-build-id --with-system-zlib --without-included-gettext
--enable-threads=posix --enable-nls --enable-clocale=gnu
--enable-libstdcxx-debug --enable-plugin --enable-objc-gc --disable-werror
--with-arch-32=i486 --with-tune=generic --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
--with-cpu=core2
Thread model: posix
gcc version 4.5.1 20100513 (prerelease) (GCC)
The error is also present in the 4.5.0 release.
--
Summary: lto1: internal compiler error: Segmentation fault
Product: gcc
Version: 4.5.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: martin dot kronbichler at it dot uu dot se
GCC build triplet: x86_64-linux-gnu
GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44196
