[Bug lto/45557] New: Segfault with -flto -O1 -finline-small-functions -fpartial-inlining

["alexey at feldgendler dot ru" <gcc-bugzilla at gcc dot gnu dot org>]

cc1plus segfaults on the attached testcase with -flto -O1
-finline-small-functions -fpartial-inlining.

$ g++-4.6 -v -flto -O1 -finline-small-functions -fpartial-inlining TC.cpp
Using built-in specs.
COLLECT_GCC=g++-4.6
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-unknown-linux-gnu/4.6.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /home/xman/gcc-4.6-20100828/configure --program-suffix=-4.6
--enable-lto --enable-version-specific-runtime-libs
Thread model: posix
gcc version 4.6.0 20100828 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-v' '-flto' '-O1' '-finline-small-functions'
'-fpartial-inlining' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
 /usr/local/libexec/gcc/x86_64-unknown-linux-gnu/4.6.0/cc1plus -quiet -v
-D_GNU_SOURCE TC.cpp -quiet -dumpbase TC.cpp -mtune=generic -march=x86-64
-auxbase TC -O1 -version -flto -finline-small-functions -fpartial-inlining -o
/tmp/ccRma3YY.s
GNU C++ (GCC) version 4.6.0 20100828 (experimental) (x86_64-unknown-linux-gnu)
        compiled by GNU C version 4.6.0 20100828 (experimental), GMP version
4.3.2, MPFR version 3.0.0-p3, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory
"/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.6.0/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.6.0/include/c++

/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.6.0/include/c++/x86_64-unknown-linux-gnu
 /usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.6.0/include/c++/backward
 /usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.6.0/include
 /usr/local/include
 /usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.6.0/include-fixed
 /usr/include
End of search list.
GNU C++ (GCC) version 4.6.0 20100828 (experimental) (x86_64-unknown-linux-gnu)
        compiled by GNU C version 4.6.0 20100828 (experimental), GMP version
4.3.2, MPFR version 3.0.0-p3, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 2c7dd1386f3abb6f2873be5b63c94737
TC.cpp: In function ?f3()?:
TC.cpp:5:5: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: Segfault with -flto -O1 -finline-small-functions -
                    fpartial-inlining
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: alexey at feldgendler dot ru
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45557