[Bug middle-end/52047] New: [trans-mem] ICE: SIGSEGV in execute_tm_mark (trans-mem.c:2270) with -O -fgnu-tm -fprefetch-loop-arrays

[Bug middle-end/52047] New: [trans-mem] ICE: SIGSEGV in execute_tm_mark (trans-mem.c:2270) with -O -fgnu-tm -fprefetch-loop-arrays

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52047

             Bug #: 52047
           Summary: [trans-mem] ICE: SIGSEGV in execute_tm_mark
                    (trans-mem.c:2270) with -O -fgnu-tm
                    -fprefetch-loop-arrays
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 26509
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26509
reduced testcase (from libitm.c/stackundo.c)

Compiler output:
$ gcc -O -fgnu-tm -fprefetch-loop-arrays testcase.c
==24821== Invalid read of size 1
==24821==    at 0x9FC6E6: execute_tm_mark() (trans-mem.c:2270)
==24821==    by 0x8FB8E4: execute_one_pass(opt_pass*) (passes.c:2081)
==24821==    by 0x8FBCA4: execute_pass_list(opt_pass*) (passes.c:2136)
==24821==    by 0x8FBCB6: execute_pass_list(opt_pass*) (passes.c:2137)
==24821==    by 0xA5DFFD: tree_rest_of_compilation(tree_node*)
(tree-optimize.c:420)
==24821==    by 0x6AFE39: cgraph_expand_function(cgraph_node*)
(cgraphunit.c:1819)
==24821==    by 0x6B1D0B: cgraph_optimize() (cgraphunit.c:1886)
==24821==    by 0x6B2369: cgraph_finalize_compilation_unit()
(cgraphunit.c:1328)
==24821==    by 0x58EC1F: c_write_global_declarations() (c-decl.c:10030)
==24821==    by 0x9F081B: toplev_main(int, char**) (toplev.c:573)
==24821==    by 0x66E009C: (below main) (in /lib64/libc-2.13.so)
==24821==  Address 0xb0 is not stack'd, malloc'd or (recently) free'd
==24821== 
testcase.c: In function 'test1':
testcase.c:6:5: 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.

Tested revisions:
r183676 - crash

[Bug middle-end/52047] [trans-mem] ICE: SIGSEGV in execute_tm_mark (trans-mem.c:2270) with -O -fgnu-tm -fprefetch-loop-arrays

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52047

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch
             Status|UNCONFIRMED                 |NEW
                URL|                            |http://gcc.gnu.org/ml/gcc-p
                   |                            |atches/2012-02/msg00096.htm
                   |                            |l
   Last reconfirmed|                            |2012-02-02
     Ever Confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-02-02 22:01:35 UTC ---
Confirmed.

[Bug middle-end/52047] [trans-mem] ICE: SIGSEGV in execute_tm_mark (trans-mem.c:2270) with -O -fgnu-tm -fprefetch-loop-arrays

[patrick.marlier at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52047

Patrick Marlier <patrick.marlier at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |patrick.marlier at gmail
                   |                            |dot com

--- Comment #2 from Patrick Marlier <patrick.marlier at gmail dot com> 2012-02-06 14:34:24 UTC ---
Proposed fix here:
http://gcc.gnu.org/ml/gcc-patches/2012-02/msg00096.html

Waiting Rth approval and Aldy's kindness for commit.
--
Patrick Marlier.

[Bug middle-end/52047] [trans-mem] ICE: SIGSEGV in execute_tm_mark (trans-mem.c:2270) with -O -fgnu-tm -fprefetch-loop-arrays

[aldyh at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52047

--- Comment #3 from Aldy Hernandez <aldyh at gcc dot gnu.org> 2012-02-06 14:42:11 UTC ---
Author: aldyh
Date: Mon Feb  6 14:42:07 2012
New Revision: 183936

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183936
Log:
        PR middle-end/52047
        * trans-mem.c (expand_call_tm): Add an assertion.
        * calls.c (flags_from_decl_or_type): Add ECF_TM_PURE to 'no vops'
        functions.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/calls.c
    trunk/gcc/trans-mem.c

[Bug middle-end/52047] [trans-mem] ICE: SIGSEGV in execute_tm_mark (trans-mem.c:2270) with -O -fgnu-tm -fprefetch-loop-arrays

[aldyh at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52047

Aldy Hernandez <aldyh at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |aldyh at gcc dot gnu.org
         Resolution|                            |FIXED

--- Comment #4 from Aldy Hernandez <aldyh at gcc dot gnu.org> 2012-02-06 14:44:31 UTC ---
fixed on trunk