[Bug middle-end/36315] New: [4.4 Regression] ICE with -fprofile-use (Invalid read of size 8)

[Bug middle-end/36315] New: [4.4 Regression] ICE with -fprofile-use (Invalid read of size 8)

[burnus at gcc dot gnu dot org]

With 4.4.0 20080523 [trunk revision 135791] the following fails on x86-64. It
was working with 2008-05-20-r135601.

$ gfortran -fprofile-generate -march=opteron -ffast-math -funroll-loops
-ftree-vectorize -ftree-loop-linear -msse3 -O3 mdbx.f90
$ ./a.out
$ gfortran -fprofile-use -march=opteron -ffast-math -funroll-loops
-ftree-vectorize -ftree-loop-linear -msse3 -O3 mdbx.f90

Valgrind shows for the latter:

==27696== Invalid read of size 8
==27696==    at 0x4D0913: ggc_set_mark (ggc-page.c:584)
==27696==    by 0x485B07: gt_ggc_mx_lang_tree_node (gt-fortran-f95-lang.h:49)
==27696==    by 0x63D14C: gt_ggc_mx_rtx_def (gtype-desc.c:1277)
==27696==    by 0x4868DE: gt_ggc_mx_lang_tree_node (gt-fortran-f95-lang.h:173)
==27696==    by 0x4866AA: gt_ggc_mx_lang_tree_node (gt-fortran-f95-lang.h:304)
==27696==    by 0x636794: gt_ggc_mx_cgraph_node (gtype-desc.c:162)
==27696==    by 0x636A45: gt_ggc_m_P11cgraph_node4htab (gtype-desc.c:1870)
==27696==    by 0x6157AE: ggc_mark_roots (ggc-common.c:107)
==27696==    by 0x4D1408: ggc_collect (ggc-page.c:1946)
==27696==    by 0x67DA14: execute_todo (passes.c:1050)
==27696==    by 0x67DCA3: execute_one_pass (passes.c:1306)
==27696==    by 0x67DE84: execute_pass_list (passes.c:1334)
==27696==  Address 0x8 is not stack'd, malloc'd or (recently) free'd
mdbx.f90: In function "mstep":
mdbx.f90:822: internal compiler error: segmentation fault

If no -profile-generate'd data is available, there is no crash.

The program is part of the Polyhedron testsuite, which is available at:
http://www.polyhedron.co.uk/MFL6VW74649


-- 
           Summary: [4.4 Regression] ICE with -fprofile-use (Invalid read of
                    size 8)
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: burnus at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36315

[Bug middle-end/36315] [4.4 Regression] ICE with -fprofile-use (Invalid read of size 8)

[ubizjak at gmail dot com]

------- Comment #1 from ubizjak at gmail dot com  2008-05-23 20:44 -------
Confirmed with mdbx.f90 source, probably due to:

2008-05-21  Tom Tromey  <tromey@redhat.com>

        * ggc-zone.c (lookup_page_table_if_allocated): New function.
        (zone_find_object_offset): Likewise.
        (gt_ggc_m_S): Likewise.
        (highest_bit): Likewise.
        * ggc-page.c (gt_ggc_m_S): New function.
        * stringpool.c (string_stack): Remove.
        (init_stringpool): Update.
        (ggc_alloc_string): Use ggc_alloc.
        (maybe_delete_ident): New function.
        (ggc_purge_stringpool): Likewise.
        (gt_ggc_m_S): Remove.
        * ggc-common.c (ggc_protect_identifiers): New global.
        (ggc_mark_roots): Call ggc_purge_stringpool.  Use
        ggc_protect_identifiers.
        * ggc.h (ggc_protect_identifiers): Declare.
        (gt_ggc_m_S): Update.
        (ggc_purge_stringpool): Declare.
        * toplev.c (compile_file): Set and reset ggc_protect_identifiers.
        * gengtype.c (write_types_process_field) <TYPE_STRING>: Remove
        special case.
        (write_root): Cast gt_ggc_m_S to gt_pointer_walker.


-- 

ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
 GCC target triplet|                            |x86_64-pc-gnu-linux
   Last reconfirmed|0000-00-00 00:00:00         |2008-05-23 20:44:39
               date|                            |
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36315

[Bug middle-end/36315] [4.4 Regression] ICE with -fprofile-use (Invalid read of size 8)

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36315

[Bug middle-end/36315] [4.4 Regression] ICE with -fprofile-use (Invalid read of size 8)

[jakub at gcc dot gnu dot org]

------- Comment #2 from jakub at gcc dot gnu dot org  2008-10-21 12:49 -------
Cannot reproduce this, all I see are some memory leaks reported by valgrind
(going to look at them), but error summary shows no errors.
Can anyone still reproduce this?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36315

[Bug middle-end/36315] [4.4 Regression] ICE with -fprofile-use (Invalid read of size 8)

[jakub at gcc dot gnu dot org]

------- Comment #3 from jakub at gcc dot gnu dot org  2008-11-03 17:01 -------
Assuming it is fixed, if anyone can still reproduce it, please reopen with
details.


-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WORKSFORME


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36315