[Bug c++/58380] New: ice in fold_comparison

["dcb314 at hotmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58380

            Bug ID: 58380
           Summary: ice in fold_comparison
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com

Created attachment 30785
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30785&action=edit
gzipped C++ source code

I just tried to compile package k3d-0.8.0.2-19 with gcc 4.9 trunk
dated 20130909. It said

/home/dcb/rpmbuild/BUILD/k3d-source-0.8.0.2/k3dsdk/document_plugin_factory.h:48:9:
internal compiler error: Segmentation fault
  inode* create_plugin(iplugin_factory& Factory, idocument& Document)
         ^
0xacdd4f crash_signal
    ../../src/trunk/gcc/toplev.c:335
0x8b7709 fold_comparison
    ../../src/trunk/gcc/fold-const.c:9052
0x8c0b9b fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
    ../../src/trunk/gcc/fold-const.c:12780
0xaff5d2 cleanup_control_expr_graph
    ../../src/trunk/gcc/tree-cfgcleanup.c:96
0xaff5d2 cleanup_control_flow_bb
    ../../src/trunk/gcc/tree-cfgcleanup.c:171
0xaff5d2 cleanup_tree_cfg_bb
    ../../src/trunk/gcc/tree-cfgcleanup.c:589
0xb01018 cleanup_tree_cfg_1
    ../../src/trunk/gcc/tree-cfgcleanup.c:634
0xb01018 cleanup_tree_cfg_noloop
    ../../src/trunk/gcc/tree-cfgcleanup.c:690
0xb01018 cleanup_tree_cfg()
    ../../src/trunk/gcc/tree-cfgcleanup.c:745
0xa27a84 execute_function_todo
    ../../src/trunk/gcc/passes.c:1791
0xa28167 execute_todo
    ../../src/trunk/gcc/passes.c:1866
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

Here is valgrind helping out with a stack backtrace

==23967== Invalid read of size 2
==23967==    at 0x8B7709: fold_comparison(unsigned int, tree_code, tree_node*,
tree_node*, tree_node*) (fold-const.c:9052)
==23967==    by 0x8C0B9B: fold_binary_loc(unsigned int, tree_code, tree_node*,
tree_node*, tree_node*) (fold-const.c:12780)
==23967==    by 0xAFF5D2: cleanup_tree_cfg_bb(basic_block_def*)
(tree-cfgcleanup.c:96)
==23967==    by 0xB01018: cleanup_tree_cfg() (tree-cfgcleanup.c:634)

Preprocessed source code attached. Flag -O2 required.