[Bug tree-optimization/37307] New: [4.4 Regression]: g++.dg/pch/system-2.C

[Bug tree-optimization/37307] New: [4.4 Regression]: g++.dg/pch/system-2.C

[hp at gcc dot gnu dot org]

With revision 139755 this test passed.
>From revision 139763 and on, this test has failed as follows:

Running /tmp/hpautotest-gcc1/gcc/gcc/testsuite/g++.dg/pch/pch.exp ...
FAIL: g++.dg/pch/system-2.C -O2 -g assembly comparison

with the message in the logfile being:

PASS: g++.dg/pch/system-2.C -O2 -g (test for excess errors)
line #8480
< .LASF138:
> .LASF240:
line #8481
<       .string "_ZNSolsEv"
>       .string "_ZNKSs6_M_repEv"
line #8482
< .LASF240:
> .LASF373:
line #8483
<       .string "_ZNKSs6_M_repEv"
>       .string "_ZNKSs5rfindEPKcm"
line #8484
< .LASF373:
> .LASF61:
line #8485
<       .string "_ZNKSs5rfindEPKcm"
>       .string "_ZNSt8ios_base9boolalphaE"
line #8486
... (pruned)
line #9342
< .LASF446:
> .LASF121:
line #9343
<       .string "time"
>       .string "ios_base"
line #9344
< .LASF121:
> .LASF459:
line #9345
<       .string "ios_base"
>       .string "_ZNSt6locale13_S_categoriesE"
line #9346
< .LASF459:
> .LASF415:
line #9347
<       .string "_ZNSt6locale13_S_categoriesE"
>       .string "_ZNKSs4_Rep12_M_is_leakedEv"
line #9348
< .LASF415:
> .LASF138:
line #9349
<       .string "_ZNKSs4_Rep12_M_is_leakedEv"
>       .string "_ZNSolsEPFRSoS_E"
FAIL: g++.dg/pch/system-2.C -O2 -g assembly comparison

Looks like some variable isn't GTY-marked, but its not just dw2_string_counter
and I can't see one in the patch.

Authors of patches in suspect revision range CC:ed.


-- 
           Summary: [4.4 Regression]: g++.dg/pch/system-2.C
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hp at gcc dot gnu dot org
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: cris-axis-elf


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37307

[Bug pch/37307] [4.4 Regression]: g++.dg/pch/system-2.C

[hp at gcc dot gnu dot org]

------- Comment #1 from hp at gcc dot gnu dot org  2008-09-01 04:01 -------
Range narrowed.  Working: 139760, failing: 139763.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37307

[Bug pch/37307] [4.4 Regression]: g++.dg/pch/system-2.C

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37307

[Bug pch/37307] [4.4 Regression]: g++.dg/pch/system-2.C

[hp at gcc dot gnu dot org]

------- Comment #2 from hp at gcc dot gnu dot org  2008-09-01 20:15 -------
Actually ... failing: 139762.  So, rguenth is no longer a suspect.


-- 

hp at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|rguenth at gcc dot gnu dot  |
                   |org                         |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37307

[Bug pch/37307] [4.4 Regression]: g++.dg/pch/system-2.C

[hp at gcc dot gnu dot org]

------- Comment #3 from hp at gcc dot gnu dot org  2008-09-02 10:34 -------
Yep, it's revision 139762 that exposed this FAIL, which of course (appears to)
just change behaviour of some optimization levels.
Incidentally, that also exposed some of the FAILs in PR37315
(I think I fumble-fingered the failing revision range in that PR):
gcc.c-torture/execute/931018-1.c, gcc.c-torture/execute/ieee/inf-2.c,
gcc.c-torture/execute/ieee/mzero6.c.  I think it'd be proper to let this PR
depend on that one, particularly since it makes sense that "re-using" a
cfun->machine could cause this and this PR seeming nasty to track down (PCH and
all).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37307

[Bug pch/37307] [4.4 Regression]: g++.dg/pch/system-2.C

[hp at gcc dot gnu dot org]

------- Comment #4 from hp at gcc dot gnu dot org  2008-09-04 02:00 -------
No, the bugs aren't *that* related.  With PR37315 fixed, this still fails,
revision 139956.


-- 

hp at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|37315                       |
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-09-04 02:00:07
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37307

[Bug pch/37307] [4.4 Regression]: g++.dg/pch/system-2.C

[hp at gcc dot gnu dot org]

------- Comment #5 from hp at gcc dot gnu dot org  2008-09-04 23:29 -------
Bug disappeared. Still failed with revision 139979, passed since at least
139984.


-- 

hp at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37307