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* [Bug tree-optimization/55253] New: [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
@ 2012-11-09 18:12 markus at trippelsdorf dot de
  2012-11-11  9:22 ` [Bug tree-optimization/55253] " markus at trippelsdorf dot de
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: markus at trippelsdorf dot de @ 2012-11-09 18:12 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253

             Bug #: 55253
           Summary: [4.8 Regression] Revision 193298 miscompiles sqlite
                    with -Os
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: markus@trippelsdorf.de


r193298 miscompiles sqlite with -Os (and thereby crashes
Firefox during startup):

Program received signal SIGSEGV, Segmentation fault.
sqlite3DbRealloc (db=0x0, p=p@entry=0x0, n=n@entry=9) at sqlite3.c:19120
(gdb) bt
#0  sqlite3DbRealloc (db=0x0, p=p@entry=0x0, n=n@entry=9) at sqlite3.c:19120
#1  0x00007ffff7f908e5 in sqlite3StrAccumAppend (p=0x7fffffffcdb8, z=0x4082e9
"sqlite> ", N=8) at sqlite3.c:19966
#2  0x00007ffff7f909d9 in sqlite3VXPrintf (pAccum=0x7fffffffcdb8,
useExtended=0, fmt=0x4082f1 "", ap=0x7fffffffcdf8) at sqlite3.c:19449
#3  0x00007ffff7f91754 in sqlite3_vsnprintf (n=0, zBuf=0x0, zFormat=0x9
<Address 0x9 out of bounds>, ap=ap@entry=0x7fffffffcdf8) at sqlite3.c:20140
#4  0x00007ffff7f917e8 in sqlite3_snprintf (n=n@entry=20,
zBuf=zBuf@entry=0x40b4a0 <mainPrompt> "", zFormat=zFormat@entry=0x4082e9
"sqlite> ") at sqlite3.c:20147
#5  0x00000000004063f5 in main_init (data=0x7fffffffcef8) at shell.c:2845
#6  main (argc=2, argv=0x7fffffffe558) at shell.c:2864

-O2 or -O3 are fine.


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
  2012-11-09 18:12 [Bug tree-optimization/55253] New: [4.8 Regression] Revision 193298 miscompiles sqlite with -Os markus at trippelsdorf dot de
@ 2012-11-11  9:22 ` markus at trippelsdorf dot de
  2012-11-12 12:03 ` jamborm at gcc dot gnu.org
                   ` (5 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: markus at trippelsdorf dot de @ 2012-11-11  9:22 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253

--- Comment #1 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-11-11 09:22:12 UTC ---
Reduced:

markus@x4 /tmp % cat test.i
struct
{
    int mallocFailed;
}
*a;

struct StrAccum
{
    int useMalloc;
}
b, c;

static void
fn1 (struct StrAccum *p1, int p2)
{
    if (p2 == 0)
        return;
    if (p1->useMalloc)
        a->mallocFailed = 0;
}

void
fn2 (struct StrAccum *p1)
{
    fn1 (p1, 1);
}

void
fn3 (struct StrAccum *p1)
{
    fn1 (p1, 1);
}

void
fn4 ()
{
    c.useMalloc = 1;
    fn1 (&c, 0);
}

int
main ()
{
    fn3 (&b);
    return 0;
}

markus@x4 /tmp % gcc -Os test.i && ./a.out
[1]    25665 segmentation fault  ./a.out

markus@x4 /tmp % gcc -O2 test.i && ./a.out
markus@x4 /tmp %


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
  2012-11-09 18:12 [Bug tree-optimization/55253] New: [4.8 Regression] Revision 193298 miscompiles sqlite with -Os markus at trippelsdorf dot de
  2012-11-11  9:22 ` [Bug tree-optimization/55253] " markus at trippelsdorf dot de
@ 2012-11-12 12:03 ` jamborm at gcc dot gnu.org
  2012-11-13 14:27 ` jamborm at gcc dot gnu.org
                   ` (4 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: jamborm at gcc dot gnu.org @ 2012-11-12 12:03 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253

Martin Jambor <jamborm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-11-12
         AssignedTo|unassigned at gcc dot       |jamborm at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #2 from Martin Jambor <jamborm at gcc dot gnu.org> 2012-11-12 12:03:12 UTC ---
Confirmed and mine, thanks a lot for the reduced testcase.


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
  2012-11-09 18:12 [Bug tree-optimization/55253] New: [4.8 Regression] Revision 193298 miscompiles sqlite with -Os markus at trippelsdorf dot de
  2012-11-11  9:22 ` [Bug tree-optimization/55253] " markus at trippelsdorf dot de
  2012-11-12 12:03 ` jamborm at gcc dot gnu.org
@ 2012-11-13 14:27 ` jamborm at gcc dot gnu.org
  2012-11-13 14:31 ` jamborm at gcc dot gnu.org
                   ` (3 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: jamborm at gcc dot gnu.org @ 2012-11-13 14:27 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253

Martin Jambor <jamborm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ian at airs dot com

--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> 2012-11-13 14:26:51 UTC ---
*** Bug 55305 has been marked as a duplicate of this bug. ***


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
  2012-11-09 18:12 [Bug tree-optimization/55253] New: [4.8 Regression] Revision 193298 miscompiles sqlite with -Os markus at trippelsdorf dot de
                   ` (2 preceding siblings ...)
  2012-11-13 14:27 ` jamborm at gcc dot gnu.org
@ 2012-11-13 14:31 ` jamborm at gcc dot gnu.org
  2012-11-13 17:05 ` jamborm at gcc dot gnu.org
                   ` (2 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: jamborm at gcc dot gnu.org @ 2012-11-13 14:31 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253

--- Comment #4 from Martin Jambor <jamborm at gcc dot gnu.org> 2012-11-13 14:31:23 UTC ---
Created attachment 28675
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28675
Fix

I am currently bootstrapping this fix.  I'll submit it to the mailing list if
all goes fine.


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
  2012-11-09 18:12 [Bug tree-optimization/55253] New: [4.8 Regression] Revision 193298 miscompiles sqlite with -Os markus at trippelsdorf dot de
                   ` (3 preceding siblings ...)
  2012-11-13 14:31 ` jamborm at gcc dot gnu.org
@ 2012-11-13 17:05 ` jamborm at gcc dot gnu.org
  2012-11-13 18:56 ` jamborm at gcc dot gnu.org
  2012-11-14 14:02 ` jamborm at gcc dot gnu.org
  6 siblings, 0 replies; 8+ messages in thread
From: jamborm at gcc dot gnu.org @ 2012-11-13 17:05 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253

Martin Jambor <jamborm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-p
                   |                            |atches/2012-11/msg01008.htm
                   |                            |l

--- Comment #5 from Martin Jambor <jamborm at gcc dot gnu.org> 2012-11-13 17:05:06 UTC ---
I have submitted a fix to the mailing list:

http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01008.html


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
  2012-11-09 18:12 [Bug tree-optimization/55253] New: [4.8 Regression] Revision 193298 miscompiles sqlite with -Os markus at trippelsdorf dot de
                   ` (4 preceding siblings ...)
  2012-11-13 17:05 ` jamborm at gcc dot gnu.org
@ 2012-11-13 18:56 ` jamborm at gcc dot gnu.org
  2012-11-14 14:02 ` jamborm at gcc dot gnu.org
  6 siblings, 0 replies; 8+ messages in thread
From: jamborm at gcc dot gnu.org @ 2012-11-13 18:56 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253

--- Comment #6 from Martin Jambor <jamborm at gcc dot gnu.org> 2012-11-13 18:56:27 UTC ---
Author: jamborm
Date: Tue Nov 13 18:56:24 2012
New Revision: 193484

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193484
Log:
2012-11-13  Martin Jambor  <mjambor@suse.cz>

    PR tree-optimization/55253
    * ipa-cp.c (merge_aggregate_lattices): Propagate aggs_contain_variable
    flag.

    * testsuite/gcc.dg/torture/pr55253.c: New test.
    * testsuite/gcc.dg/torture/pr55305.c: Likewise.


Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr55253.c
    trunk/gcc/testsuite/gcc.dg/torture/pr55305.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-cp.c
    trunk/gcc/testsuite/ChangeLog


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug tree-optimization/55253] [4.8 Regression] Revision 193298 miscompiles sqlite with -Os
  2012-11-09 18:12 [Bug tree-optimization/55253] New: [4.8 Regression] Revision 193298 miscompiles sqlite with -Os markus at trippelsdorf dot de
                   ` (5 preceding siblings ...)
  2012-11-13 18:56 ` jamborm at gcc dot gnu.org
@ 2012-11-14 14:02 ` jamborm at gcc dot gnu.org
  6 siblings, 0 replies; 8+ messages in thread
From: jamborm at gcc dot gnu.org @ 2012-11-14 14:02 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55253

Martin Jambor <jamborm at gcc dot gnu.org> changed:

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

--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> 2012-11-14 14:02:26 UTC ---
Fixed.


^ permalink raw reply	[flat|nested] 8+ messages in thread
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