[Bug tree-optimization/43234] New: ICE with per-function -ftree-loop-distribution (via attribute optimize or pragma)

[zsojka at seznam dot cz]

Command line:
gcc -O1 -c testcase.c

Tested revisions:
trunk r157161 x86_64 - segfault
trunk r156472 i686   - segfault
trunk r153685 x86_64 - segfault
4.4 r157120 x86_64 - assert at tree-nrv.c:143
4.4 r156591 i686   - OK
4.4 r149995 x86_64 - assert at tree-nrv.c:143
(all with checking=yes)

Output - trunk:
$ valgrind --trace-children=yes /mnt/svn/gcc-trunk/binary-157161/bin/gcc -O1 -c
testcase.c
...
==22758==
==22758== Invalid read of size 2
==22758==    at 0x6E51B6: mark_jump_label_1 (jump.c:1027)
==22758==    by 0x6E531F: mark_jump_label_1 (jump.c:1141)
==22758==    by 0x6E531F: mark_jump_label_1 (jump.c:1141)
==22758==    by 0x6E531F: mark_jump_label_1 (jump.c:1141)
==22758==    by 0x6E563E: rebuild_jump_labels (jump.c:199)
==22758==    by 0x5711EC: gimple_expand_cfg (cfgexpand.c:3773)
==22758==    by 0x72531A: execute_one_pass (passes.c:1567)
==22758==    by 0x7255A4: execute_pass_list (passes.c:1622)
==22758==    by 0x81B594: tree_rest_of_compilation (tree-optimize.c:413)
==22758==    by 0x99DBB0: cgraph_expand_function (cgraphunit.c:1545)
==22758==    by 0x9A0584: cgraph_optimize (cgraphunit.c:1624)
==22758==    by 0x9A0AE4: cgraph_finalize_compilation_unit (cgraphunit.c:1093)
==22758==  Address 0xffffffff00000020 is not stack'd, malloc'd or (recently)
free'd
==22758==
testcase.c: In function 'foo':
testcase.c:15:1: 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.

Output - 4.4 x86_64:
$ /mnt/svn/gcc-4_4/binary-157120-enable-checking/bin/gcc -O1 -c testcase.c
testcase.c: In function ‘bar’:
testcase.c:5: internal compiler error: in tree_nrv, at tree-nrv.c:143
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: ICE with per-function -ftree-loop-distribution (via
                    attribute optimize or pragma)
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz
  GCC host triplet: x86(_64)-pc-linux-gnu
GCC target triplet: x86(_64)-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43234