[Bug ada/18819] [4.1 Regression] ACATS cdd2a02 fails at runtime

[Bug ada/18819] [4.1 Regression] ACATS cdd2a02 fails at runtime

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |critical


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1 Regression] ACATS cdd2a02 fails at runtime

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1 Regression] ACATS cdd2a02 fails at runtime

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P2                          |P5
   Target Milestone|4.2.0                       |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a02 fails at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #11 from ebotcazou at gcc dot gnu dot org  2005-11-22 10:25 -------
Investigating again.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|ebotcazou at gcc dot gnu dot|
                   |org                         |
         AssignedTo|unassigned at gcc dot gnu   |ebotcazou at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2005-07-09 23:53:12         |2005-11-22 10:25:44
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a02 fails at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #12 from ebotcazou at gcc dot gnu dot org  2005-12-15 13:29 -------
Subject: Bug 18819

Author: ebotcazou
Date: Thu Dec 15 13:29:14 2005
New Revision: 108576

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=108576
Log:
2005-12-15  Eric Botcazou  <ebotcazou@adacore.com>

        PR ada/18659
        PR ada/18819
ada/
        * misc.c (tree_sra_requested): New global.
        (gnat_init_options): Detect -ftree-sra.
        (gnat_post_options): Enable Tree-SRA only if specifically requested.

gcc/
        * doc/invoke.texi (Optimize Options): Document that
        -ftree-sra is not automatically enabled for the Ada compiler.


Modified:
    branches/gcc-4_1-branch/gcc/ChangeLog
    branches/gcc-4_1-branch/gcc/ada/ChangeLog
    branches/gcc-4_1-branch/gcc/ada/misc.c
    branches/gcc-4_1-branch/gcc/doc/invoke.texi


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2 Regression] ACATS cdd2a02 fails at runtime

[ebotcazou at gcc dot gnu dot org]

-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ebotcazou at gcc dot gnu dot
                   |                            |org
         AssignedTo|ebotcazou at gcc dot gnu dot|unassigned at gcc dot gnu
                   |org                         |dot org
           Severity|critical                    |major
             Status|ASSIGNED                    |NEW
            Summary|[4.1/4.2 Regression] ACATS  |[4.2 Regression] ACATS
                   |cdd2a02 fails at runtime    |cdd2a02 fails at runtime
   Target Milestone|4.1.0                       |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[laurent at guerby dot net]

------- Comment #13 from laurent at guerby dot net  2006-01-17 19:02 -------
http://gcc.gnu.org/ml/gcc-testresults/2006-01/msg00663.html

cdda01 fails on s390-linux on 4.1 with tree-sra disabled.

,.,. CDD2A01 ACATS 2.5 06-01-16 19:32:21
---- CDD2A01 Check that the Read and Write attributes for a type
                extension are created from the parent type's attribute
                (which may be user-defined) and those for the extension 
                components; also check that the default input and output
                attributes are used for a type extension, even if the
                parent type's attribute is user-defined.

raised CONSTRAINT_ERROR : fdd2a00.adb:29 range check failed
FAIL:   cdd2a01

,.,. CDD2A02 ACATS 2.5 06-01-16 19:32:25
---- CDD2A02 Check that the Read, Write, Input, and Output attributes
                are inherited for untagged derived types.

raised CONSTRAINT_ERROR : fdd2a00.adb:29 range check failed
FAIL:   cdd2a02


-- 

laurent at guerby dot net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.2 Regression] ACATS      |[4.1/4.2 Regression] ACATS
                   |cdd2a02 fails at runtime    |cdd2a01 cdd2a02 fail at
                   |                            |runtime


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[uweigand at gcc dot gnu dot org]

------- Comment #14 from uweigand at gcc dot gnu dot org  2006-01-20 18:39 -------
Some additional details about the s390x failure.  This is caused by a
miscompile of the fdd2a00__write__2 support routine:

        lg      %r4,168(%r15)   # 35    *movdi_64/8     [length = 6]
        lg      %r3,160(%r15)   # 36    *movdi_64/8     [length = 6]
        cgr     %r4,%r3 # 37    *cmpdi_ccs/1    [length = 4]
        stg     %r2,168(%r15)   # 33    *movdi_64/9     [length = 6]

Note how insn 35 reads a stack slot that is uninitialized because
insn 33 has been scheduled later.  This is apparently caused by
an alias set issue.  The code at the .t97.final_cleanup level reads:

  A.63 = system__arith_64__add_with_ovflo_check (D.1421, D.1426);
  R38b = (ada__streams__Tstream_element_offsetB *) &A.63;

where the data type of A.63 is system__arith_64__int64.

This gets expanded into

(insn 32 31 33 3 (set (reg:DI 60)
        (reg:DI 2 %r2)) -1 (nil)
    (nil))

(insn 33 32 34 3 (set (mem/c/i:DI (plus:DI (reg/f:DI 39 virtual-stack-vars)
                (const_int -8 [0xfffffffffffffff8])) [26 A.63+0 S8 A64])
        (reg:DI 60)) -1 (nil)
    (nil))

(insn 34 33 35 3 (parallel [
            (set (reg:DI 43 [ R38b ])
                (plus:DI (reg/f:DI 39 virtual-stack-vars)
                    (const_int -8 [0xfffffffffffffff8])))
            (clobber (reg:CC 33 %cc))
        ]) -1 (nil)
    (nil))

(insn 35 34 36 3 (set (reg:DI 48 [ D.1430 ])
        (mem:DI (reg:DI 43 [ R38b ]) [27 S8 A64])) -1 (nil)
    (nil))

Note alias set 26 in insn 33 vs. alias set 27 in insn 35.

Any ideas why this would be the case?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[laurent at guerby dot net]

------- Comment #15 from laurent at guerby dot net  2006-01-21 09:32 -------
4.2 fails on amd64-linux as of Fri Jan 20 20:40:28 UTC 2006 (revision 110036)
http://gcc.gnu.org/ml/gcc-testresults/2006-01/msg01071.html

RUN cdd2a02
,.,. CDD2A02 ACATS 2.5 06-01-23 01:01:16
---- CDD2A02 Check that the Read, Write, Input, and Output attributes
                are inherited for untagged derived types.
   * CDD2A02 Inherited Input and Output are not inverses of each other -
                4.
**** CDD2A02 FAILED ****************************.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #16 from ebotcazou at gcc dot gnu dot org  2006-01-22 10:19 -------
> Any ideas why this would be the case?

The types are not supposed to alias each other.  The lines in the .dg file are:

      R8b : fdd2a00__write__A7b__2 := 
        ada__streams__Tstream_element_offsetB?(
        system__arith_64__add_with_ovflo_check (interfaces__integer_64
        ?(stream.last), interfaces__integer_64?(
        ada__streams__Tstream_element_offsetB(item'length))))'reference;
      [constraint_error when R8b.all >= R5b.all and then (R5b.all < 
        1 or else R8b.all > ada__streams__Tstream_element_offsetB(R3b)) "range
check failed"]

ada/trans.c:3053

    case N_Reference:
      /* Like 'Access as far as we are concerned.  */
      gnu_result = gnat_to_gnu (Prefix (gnat_node));
      gnu_result = build_unary_op (ADDR_EXPR, NULL_TREE, gnu_result);
      gnu_result_type = get_unpadded_type (Etype (gnat_node));
      break;

These N_Reference nodes are an endless source of problems because they cause
gigi to take the address of objects that are not aliased.  We have been working
towards eliminating them as much as possible by using renaming instead; this
case (check on the result of a function call) is probably the most delicate
one.

No real solution as of this writing, only a poor workaround: not compiling the
support files with -gnato (overflow checks).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #17 from ebotcazou at gcc dot gnu dot org  2006-01-22 11:43 -------
> No real solution as of this writing, only a poor workaround: not compiling the
> support files with -gnato (overflow checks).

Well, I may have spoken too soon. :-)  We are calling Remove_Side_Effects on:

N_Type_Conversion (Node_Id=1679) (analyzed)
 Rewritten: original node = N_Op_Add "Oadd" (Node_Id=39499)
 Parent = N_Range (Node_Id=1681)
 Sloc = 7611  fdd2a00.adb:6:38
 Etype = N_Defining_Identifier "Tstream_element_offsetB" (Entity_Id=2017)
 Subtype_Mark = N_Identifier "Tstream_element_offsetB" (Node_Id=39497)
 Expression = N_Function_Call (Node_Id=39496)
 Conversion_OK = True

It turns out that the fix is already present in the front-end, but inhibited:

      --  If this is a type conversion, leave the type conversion and remove
      --  the side effects in the expression. This is important in several
      --  circumstances: for change of representations, and also when this
      --  is a view conversion to a smaller object, where gigi can end up
      --  creating its own temporary of the wrong size.

      --  ??? this transformation is inhibited for elementary types that are
      --  not involved in a change of representation because it causes
      --  regressions that are not fully understood yet.

      elsif Nkind (Exp) = N_Type_Conversion
        and then (not Is_Elementary_Type (Underlying_Type (Exp_Type))
                   or else Nkind (Parent (Exp)) = N_Assignment_Statement)
      then
         Remove_Side_Effects (Expression (Exp), Name_Req, Variable_Ref);
         Scope_Suppress := Svg_Suppress;
         return;

However, another possible fix is to make a copy when we know we will not be
able to use a renaming.  Tentative patch to be attached.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #18 from ebotcazou at gcc dot gnu dot org  2006-01-22 11:44 -------
Created an attachment (id=10701)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10701&action=view)
Patch for miscompilation on s390x.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |ebotcazou at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #19 from ebotcazou at gcc dot gnu dot org  2006-01-22 16:31 -------
Created an attachment (id=10706)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10706&action=view)
Other patch for miscompilation on s390x.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #20 from ebotcazou at gcc dot gnu dot org  2006-01-22 22:29 -------
(From update of attachment 10701)
Probably too gross.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #10701|0                           |1
        is obsolete|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[charlet at adacore dot com]

------- Comment #21 from charlet at adacore dot com  2006-01-23 15:12 -------
Subject: Re:  [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

> No real solution as of this writing, only a poor workaround: not compiling the
> support files with -gnato (overflow checks).

That's not really an option, since these files must be compiled with
-gnato (well at least report.adb) for proper operation of some ACATS tests.

Arno


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #22 from ebotcazou at gcc dot gnu dot org  2006-01-23 15:15 -------
> That's not really an option, since these files must be compiled with
> -gnato (well at least report.adb) for proper operation of some ACATS tests.

Agreed.  Can I install the front-end fix on the 4.1 branch then?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.1/4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #23 from ebotcazou at gcc dot gnu dot org  2006-01-25 14:07 -------
Subject: Bug 18819

Author: ebotcazou
Date: Wed Jan 25 14:06:59 2006
New Revision: 110213

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=110213
Log:
        PR ada/18819
        * exp_util.adb (Remove_Side_Effects): Lift enclosing type conversion
        nodes for elementary types in all cases.


Modified:
    branches/gcc-4_1-branch/gcc/ada/ChangeLog
    branches/gcc-4_1-branch/gcc/ada/exp_util.adb


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #24 from ebotcazou at gcc dot gnu dot org  2006-01-25 14:08 -------
Should be fixed on 4.1 branch.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|ebotcazou at gcc dot gnu dot|
                   |org                         |
            Summary|[4.1/4.2 Regression] ACATS  |[4.2 Regression] ACATS
                   |cdd2a01 cdd2a02 fail at     |cdd2a01 cdd2a02 fail at
                   |runtime                     |runtime


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[uweigand at gcc dot gnu dot org]

------- Comment #25 from uweigand at gcc dot gnu dot org  2006-01-25 18:03 -------
Yes, the patch fixes the problem on s390x.

Thanks!


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2 Regression] ACATS cdd2a01 cdd2a02 fail at runtime

[charlet at gcc dot gnu dot org]

------- Comment #26 from charlet at gcc dot gnu dot org  2006-02-15 09:40 -------
Subject: Bug 18819

Author: charlet
Date: Wed Feb 15 09:40:13 2006
New Revision: 111069

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=111069
Log:
2006-02-13  Ed Schonberg  <schonberg@adacore.com>
            Javier Miranda  <miranda@adacore.com>
            Eric Botcazou  <ebotcazou@adacore.com>

        * exp_util.ads, exp_util.adb (Find_Prim_Op,
        Is_Predefined_Primitive_Operation): When
        searching for the predefined equality operator, verify that operands
        have the same type.
        (Is_Predefined_Dispatching_Operation): Remove the code that looks
        for the last entity in the list of aliased subprograms. This code
        was wrong in case of renamings.
        (Set_Renamed_Subprogram): New procedure
        (Remove_Side_Effects): Replace calls to Etype (Exp) with use of the
        Exp_Type constant computed when entering this subprogram.
        (Known_Null): New function
        (OK_To_Do_Constant_Replacement): New function
        (Known_Non_Null): Check scope before believing Is_Known_Non_Null flag
        (Side_Effect_Free): An attribute reference 'Input is not free of
        side effect, unlike other attributes that are functions. (from code
        reading).
        (Remove_Side_Effects): Expressions that involve packed arrays or
records
        are copied at the point of reference, and therefore must be marked as
        renamings of objects.
        (Is_Predefined_Dispatching_Operation): Return false if the operation is
        not a dispatching operation.

        PR ada/18819
        (Remove_Side_Effects): Lift enclosing type conversion nodes for
        elementary types in all cases.


Modified:
    trunk/gcc/ada/exp_util.adb
    trunk/gcc/ada/exp_util.ads


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2 Regression] ACATS cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #27 from ebotcazou at gcc dot gnu dot org  2006-02-15 10:09 -------
Back to the original problem, purely related to SRA.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2005-11-22 10:25:44         |2006-02-15 10:09:18
               date|                            |
            Summary|[4.2 Regression] ACATS      |[4.2 Regression] ACATS
                   |cdd2a01 cdd2a02 fail at     |cdd2a02 fail at runtime
                   |runtime                     |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2 Regression] ACATS cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #28 from ebotcazou at gcc dot gnu dot org  2006-02-15 10:23 -------
Richard, it's the only remaining failure in ACATS on most platforms: the bad
interaction between SRA and aggregates under certain circumstances.  Do you
know what amount of work would be required to properly get rid of it?


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kenner at vlsi1 dot ultra
                   |                            |dot nyu dot edu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2 Regression] ACATS cdd2a02 fail at runtime

[kenner at vlsi1 dot ultra dot nyu dot edu]

------- Comment #29 from kenner at vlsi1 dot ultra dot nyu dot edu  2006-02-15 12:57 -------
Subject: Re:   [4.2 Regression] ACATS cdd2a02 fail at runtime

    Richard, it's the only remaining failure in ACATS on most platforms:
    the bad interaction between SRA and aggregates under certain
    circumstances.  Do you know what amount of work would be required to
    properly get rid of it?

Is this the one with extension records that rename a discriminant?  If so,
the fix involves the front end materializing fields that don't semantically
exist for the purposes of listing all fields in the record.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2 Regression] ACATS cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #30 from ebotcazou at gcc dot gnu dot org  2006-02-15 17:12 -------
> Is this the one with extension records that rename a discriminant?  If so,
> the fix involves the front end materializing fields that don't semantically
> exist for the purposes of listing all fields in the record.

Yes, that's it.  Is a front-end specialist working on that or...?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2 Regression] ACATS cdd2a02 fail at runtime

[kenner at vlsi1 dot ultra dot nyu dot edu]

------- Comment #31 from kenner at vlsi1 dot ultra dot nyu dot edu  2006-02-15 17:14 -------
Subject: Re:   [4.2 Regression] ACATS cdd2a02 fail at runtime

    Yes, that's it.  Is a front-end specialist working on that or...?

Nope.  I spoke to Ed S. about it a while ago and he wasn't too enthusiastic
about the idea.  Why don't you make a small test case and let's take it
from there.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2 Regression] ACATS cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #32 from ebotcazou at gcc dot gnu dot org  2006-03-07 18:33 -------
Created an attachment (id=10984)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10984&action=view)
Reduced testcase.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2/4.3 regression] ACATS cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|major                       |normal
            Summary|[4.2/4.3 Regression] ACATS  |[4.2/4.3 regression] ACATS
                   |cdd2a02 fail at runtime     |cdd2a02 fail at runtime


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2/4.3 regression] ACATS cdd2a02 fail at runtime

[christian dot joensson at gmail dot com]

------- Comment #33 from christian dot joensson at gmail dot com  2007-02-20 13:11 -------
(In reply to comment #32)
> Created an attachment (id=10984)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10984&action=view) [edit]
> Reduced testcase.
> 

any news?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2/4.3 regression] ACATS cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #34 from ebotcazou at gcc dot gnu dot org  2007-02-20 13:13 -------
> any news?

The patch has been written at AdaCore.  I'll try to dig it out.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2/4.3 regression] ACATS cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #35 from ebotcazou at gcc dot gnu dot org  2007-02-21 22:58 -------
Subject: Bug 18819

Author: ebotcazou
Date: Wed Feb 21 22:58:44 2007
New Revision: 122208

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=122208
Log:
        PR ada/18819
        * sem_ch3.adb (Create_Constrained_Components): for a subtype of an
        untagged derived type, add hidden components to keep discriminant
        layout consistent, when a given discriminant of the derived type
        constraints several discriminants of the parent type.


Added:
    trunk/gcc/testsuite/gnat.dg/derived_aggregate.adb
Modified:
    trunk/gcc/ada/ChangeLog
    trunk/gcc/ada/sem_ch3.adb
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2/4.3 regression] ACATS cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #36 from ebotcazou at gcc dot gnu dot org  2007-02-21 23:00 -------
Subject: Bug 18819

Author: ebotcazou
Date: Wed Feb 21 23:00:01 2007
New Revision: 122209

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=122209
Log:
        PR ada/18819
        * sem_ch3.adb (Create_Constrained_Components): for a subtype of an
        untagged derived type, add hidden components to keep discriminant
        layout consistent, when a given discriminant of the derived type
        constraints several discriminants of the parent type.


Added:
    branches/gcc-4_2-branch/gcc/testsuite/gnat.dg/derived_aggregate.adb
Modified:
    branches/gcc-4_2-branch/gcc/ada/ChangeLog
    branches/gcc-4_2-branch/gcc/ada/sem_ch3.adb
    branches/gcc-4_2-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819

[Bug ada/18819] [4.2/4.3 regression] ACATS cdd2a02 fail at runtime

[ebotcazou at gcc dot gnu dot org]

------- Comment #37 from ebotcazou at gcc dot gnu dot org  2007-02-21 23:04 -------
At long last.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-
                   |                            |patches/2007-
                   |                            |02/msg01786.html
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18819