[Bug middle-end/44763] New: SEGV in allocno_priority_compare_func on Solaris 8

[Bug middle-end/44763] New: SEGV in allocno_priority_compare_func on Solaris 8

[ro at gcc dot gnu dot org]

In a Solaris 8/x86 testsuite run, several testcases fails with an ICE: a SEGV
in
allocno_priority_compare_func.

An example is

FAIL: g++.old-deja/g++.bugs/900511_01.C (internal compiler error)
FAIL: g++.old-deja/g++.bugs/900511_01.C (test for excess errors)
WARNING: g++.old-deja/g++.bugs/900511_01.C compilation failed to produce
executable

$ ./cc1plus 900511_01.ii
 struct_1::operator int() struct_2::operator float() void test() int main()
Analyzing compilation unit
Performing interprocedural optimizations
 <*free_lang_data> <visibility> <early_local_cleanups> <whole-program>
<inline>Assembling functions:
 struct_1::operator int() struct_2::operator float() void test()
/vol/gcc/src/hg/trunk/solaris/gcc/testsuite/g++.old-deja/g++.bugs/900511_01.C:
In function 'void test()':
/vol/gcc/src/hg/trunk/solaris/gcc/testsuite/g++.old-deja/g++.bugs/900511_01.C:41:1:
internal compiler error: Segmentation Fault

In gdb, I find this stacktrace:

Program received signal SIGSEGV, Segmentation fault.
allocno_priority_compare_func (v1p=0x8d73c14, v2p=0x8d73c1c)
    at /vol/gcc/src/hg/trunk/solaris/gcc/ira-color.c:1750
1750      pri1 = allocno_priorities[ALLOCNO_NUM (a1)];
(gdb) where
#0  allocno_priority_compare_func (v1p=0x8d73c14, v2p=0x8d73c1c)
    at /vol/gcc/src/hg/trunk/solaris/gcc/ira-color.c:1750
#1  0xdfadbb3d in qsort () from /usr/lib/libc.so.1
#2  0x084a61b5 in fast_allocation ()
    at /vol/gcc/src/hg/trunk/solaris/gcc/ira-color.c:3260
#3  ira_color () at /vol/gcc/src/hg/trunk/solaris/gcc/ira-color.c:3325
#4  0x08491b88 in ira () at /vol/gcc/src/hg/trunk/solaris/gcc/ira.c:3278
#5  rest_of_handle_ira () at /vol/gcc/src/hg/trunk/solaris/gcc/ira.c:3433
#6  0x084f29a8 in execute_one_pass (pass=0x8c24a60)
    at /vol/gcc/src/hg/trunk/solaris/gcc/passes.c:1580
#7  0x084f2c89 in execute_pass_list (pass=0x8c24a60)
    at /vol/gcc/src/hg/trunk/solaris/gcc/passes.c:1635
#8  0x084f2c9c in execute_pass_list (pass=0x8cb0da0)
    at /vol/gcc/src/hg/trunk/solaris/gcc/passes.c:1636
#9  0x085f6382 in tree_rest_of_compilation (fndecl=0xdfa24b80)
    at /vol/gcc/src/hg/trunk/solaris/gcc/tree-optimize.c:420
#10 0x0879591d in cgraph_expand_function (node=0xdf992498)
    at /vol/gcc/src/hg/trunk/solaris/gcc/cgraphunit.c:1632
#11 0x08798c77 in cgraph_output_in_order ()
    at /vol/gcc/src/hg/trunk/solaris/gcc/cgraphunit.c:1805
#12 cgraph_optimize () at /vol/gcc/src/hg/trunk/solaris/gcc/cgraphunit.c:1962
#13 0x08798fff in cgraph_finalize_compilation_unit ()
    at /vol/gcc/src/hg/trunk/solaris/gcc/cgraphunit.c:1171
#14 0x08190a82 in cp_write_global_declarations ()
    at /vol/gcc/src/hg/trunk/solaris/gcc/cp/decl2.c:3924
#15 0x0859d74c in compile_file (argc=2, argv=0x80477c4)
    at /vol/gcc/src/hg/trunk/solaris/gcc/toplev.c:997
#16 do_compile (argc=2, argv=0x80477c4)
    at /vol/gcc/src/hg/trunk/solaris/gcc/toplev.c:2342
#17 toplev_main (argc=2, argv=0x80477c4)
    at /vol/gcc/src/hg/trunk/solaris/gcc/toplev.c:2383
#18 0x082c16cb in main (argc=2, argv=0x80477c4)
    at /vol/gcc/src/hg/trunk/solaris/gcc/main.c:35

This is almost certainly another case of PR bootstrap/43870 and
PR tree-optimization/42157.

Vladimir, could you please have a look?

Thanks.
  Rainer


-- 
           Summary: SEGV in allocno_priority_compare_func on Solaris 8
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ro at gcc dot gnu dot org
 GCC build triplet: i386-pc-solaris2.8
  GCC host triplet: i386-pc-solaris2.8
GCC target triplet: i386-pc-solaris2.8


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44763

[Bug middle-end/44763] [4.4/4.5/4.6 regression] SEGV in allocno_priority_compare_func on Solaris 8

[ro at gcc dot gnu dot org]

------- Comment #1 from ro at gcc dot gnu dot org  2010-07-16 13:52 -------
This is a regression from GCC 3.4.6.


-- 

ro at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.4.5 4.5.1 4.6.0
      Known to work|                            |3.4.6
            Summary|SEGV in                     |[4.4/4.5/4.6 regression]
                   |allocno_priority_compare_fun|SEGV in
                   |c on Solaris 8              |allocno_priority_compare_fun
                   |                            |c on Solaris 8


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44763

[Bug middle-end/44763] [4.4/4.5/4.6 regression] SEGV in allocno_priority_compare_func on Solaris 8

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.4.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44763

[Bug middle-end/44763] [4.4/4.5/4.6 regression] SEGV in allocno_priority_compare_func on Solaris 8

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44763

[Bug middle-end/44763] [4.4/4.5/4.6 regression] SEGV in allocno_priority_compare_func on Solaris 8

[ebotcazou at gcc dot gnu dot org]

------- Comment #2 from ebotcazou at gcc dot gnu dot org  2010-09-02 09:26 -------
We ran into this on SPARC/Solaris 8 as well.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ebotcazou at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-09-02 09:26:04
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44763

[Bug middle-end/44763] [4.4/4.5/4.6 regression] SEGV in allocno_priority_compare_func on Solaris 8

[ro at gcc dot gnu dot org]

------- Comment #3 from ro at gcc dot gnu dot org  2010-09-16 16:37 -------
Subject: Bug 44763

Author: ro
Date: Thu Sep 16 16:37:01 2010
New Revision: 164341

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164341
Log:
Record PR middle-end/44763 in ChangeLog.

Modified:
    trunk/gcc/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44763

[Bug middle-end/44763] [4.4/4.5/4.6 regression] SEGV in allocno_priority_compare_func on Solaris 8

[ro at gcc dot gnu dot org]

------- Comment #4 from ro at gcc dot gnu dot org  2010-09-16 16:43 -------
Fixed for 4.6.0.


-- 

ro at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-
                   |                            |patches/2010-
                   |                            |09/msg00035.html
      Known to fail|4.4.5 4.5.1 4.6.0           |4.4.5 4.5.1
      Known to work|3.4.6                       |3.4.6 4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44763

[Bug middle-end/44763] [4.4/4.5 regression] SEGV in allocno_priority_compare_func on Solaris 8

[ebotcazou at gcc dot gnu dot org]

------- Comment #5 from ebotcazou at gcc dot gnu dot org  2010-09-23 13:05 -------
Subject: Bug 44763

Author: ebotcazou
Date: Thu Sep 23 13:05:39 2010
New Revision: 164562

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164562
Log:
        PR middle-end/44763
        * ira-color.c (SORTGT): New macro, helper for qsort callbacks.
        (allocno_priority_compare_func): Use it instead of a straight
        difference computation over priorities.

Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/ira-color.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44763

[Bug middle-end/44763] [4.4/4.5 regression] SEGV in allocno_priority_compare_func on Solaris 8

[ebotcazou at gcc dot gnu dot org]

------- Comment #6 from ebotcazou at gcc dot gnu dot org  2010-09-23 13:07 -------
Subject: Bug 44763

Author: ebotcazou
Date: Thu Sep 23 13:07:01 2010
New Revision: 164563

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164563
Log:
        PR middle-end/44763
        * ira-color.c (SORTGT): New macro, helper for qsort callbacks.
        (allocno_priority_compare_func): Use it instead of a straight
        difference computation over priorities.

Modified:
    branches/gcc-4_4-branch/gcc/ChangeLog
    branches/gcc-4_4-branch/gcc/ira-color.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44763

[Bug middle-end/44763] [4.4/4.5 regression] SEGV in allocno_priority_compare_func on Solaris 8

[ebotcazou at gcc dot gnu dot org]

------- Comment #7 from ebotcazou at gcc dot gnu dot org  2010-09-23 13:08 -------
Fixed everywhere.


-- 

ebotcazou at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44763