[Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8)

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* [Bug testsuite/37960]  New: [4.4 Regression] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
@ 2008-10-30 18:57 eric dot weddington at atmel dot com
  2008-10-30 18:58 ` [Bug testsuite/37960] " eric dot weddington at atmel dot com
                   ` (10 more replies)
  0 siblings, 11 replies; 12+ messages in thread
From: eric dot weddington at atmel dot com @ 2008-10-30 18:57 UTC (permalink / raw)
  To: gcc-bugs

FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)

New regression test from bug 11492 fails for AVR with:

Executing on host: /usr/local/avrdev/gcc/build/gcc/xgcc
-B/usr/local/avrdev/gcc/build/gcc/
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr11492.c   -Wsign-compare
-DSTACK_SIZE=2048 -DNO_TRAMPOLINES -S  -DSIGNAL_SUPPRESS -mmcu=atmega128   -o
pr11492.s    (timeout = 300)
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr11492.c: In function 'main':

/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr11492.c:8: warning: comparison
between signed and unsigned integer expressions

output is:
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr11492.c: In function 'main':

/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr11492.c:8: warning: comparison
between signed and unsigned integer expressions


FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)


-- 
           Summary: [4.4 Regression] FAIL: gcc.dg/pr11492.c  (test for bogus
                    messages, line 8)
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: eric dot weddington at atmel dot com
GCC target triplet: avr-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] [4.4 Regression] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
@ 2008-10-30 18:58 ` eric dot weddington at atmel dot com
  2008-10-30 19:07 ` manu at gcc dot gnu dot org
                   ` (9 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: eric dot weddington at atmel dot com @ 2008-10-30 18:58 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from eric dot weddington at atmel dot com  2008-10-30 18:56 -------
Bug caused by:

2008-10-29  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR 11492
        * gcc.dg/pr11492.c: New.
        * g++.dg/warn/pr11492.C: New.

Manuel, could you take a look at this?


-- 

eric dot weddington at atmel dot com changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] [4.4 Regression] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
  2008-10-30 18:58 ` [Bug testsuite/37960] " eric dot weddington at atmel dot com
@ 2008-10-30 19:07 ` manu at gcc dot gnu dot org
  2008-10-30 20:00 ` eric dot weddington at atmel dot com
                   ` (8 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: manu at gcc dot gnu dot org @ 2008-10-30 19:07 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #2 from manu at gcc dot gnu dot org  2008-10-30 19:04 -------
I don't know how to compile/test AVR. Is it in the CompileFarm?

To anyone with more knowledge on AVR, any suggestion what could cause this? Is
there any special about signed/unsigned multiplication on AVR?


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-10-30 19:04:48
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] [4.4 Regression] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
  2008-10-30 18:58 ` [Bug testsuite/37960] " eric dot weddington at atmel dot com
  2008-10-30 19:07 ` manu at gcc dot gnu dot org
@ 2008-10-30 20:00 ` eric dot weddington at atmel dot com
  2008-10-30 20:19 ` [Bug testsuite/37960] " manu at gcc dot gnu dot org
                   ` (7 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: eric dot weddington at atmel dot com @ 2008-10-30 20:00 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #3 from eric dot weddington at atmel dot com  2008-10-30 19:57 -------
(In reply to comment #2)
> I don't know how to compile/test AVR. Is it in the CompileFarm?
> 
> To anyone with more knowledge on AVR, any suggestion what could cause this? Is
> there any special about signed/unsigned multiplication on AVR?
> 

I don't know if it is in the Compile Farm, or not. But I can test for you.

Note that AVR has 8-bit chars, 16-bit ints and pointers, 32-bit longs.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
                   ` (2 preceding siblings ...)
  2008-10-30 20:00 ` eric dot weddington at atmel dot com
@ 2008-10-30 20:19 ` manu at gcc dot gnu dot org
  2008-10-30 20:29 ` manu at gcc dot gnu dot org
                   ` (6 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: manu at gcc dot gnu dot org @ 2008-10-30 20:19 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #4 from manu at gcc dot gnu dot org  2008-10-30 20:17 -------
(In reply to comment #3)
> 
> I don't know if it is in the Compile Farm, or not. But I can test for you.
> 

I need a way to debug this. I have no idea what the issue is.

> Note that AVR has 8-bit chars, 16-bit ints and pointers, 32-bit longs.

That doesn't ring a bell.

Anyway, this is not a regression. My patch added the testcase. The bogus
warning was there already.


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.4 Regression] FAIL:      |FAIL: gcc.dg/pr11492.c
                   |gcc.dg/pr11492.c  (test for |(test for bogus messages,
                   |bogus messages, line 8)     |line 8)


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
                   ` (3 preceding siblings ...)
  2008-10-30 20:19 ` [Bug testsuite/37960] " manu at gcc dot gnu dot org
@ 2008-10-30 20:29 ` manu at gcc dot gnu dot org
  2008-10-30 20:44 ` eric dot weddington at atmel dot com
                   ` (5 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: manu at gcc dot gnu dot org @ 2008-10-30 20:29 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #5 from manu at gcc dot gnu dot org  2008-10-30 20:27 -------
(In reply to comment #3)
> 
> Note that AVR has 8-bit chars, 16-bit ints and pointers, 32-bit longs.

Just a guess, given the above: for unsigned char b, b*1000 is signed integer
and it may overflow, so probably this is causing the warning. Perhaps we should
only run this testcase with int32plus targets.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
                   ` (4 preceding siblings ...)
  2008-10-30 20:29 ` manu at gcc dot gnu dot org
@ 2008-10-30 20:44 ` eric dot weddington at atmel dot com
  2008-10-30 21:19 ` manu at gcc dot gnu dot org
                   ` (4 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: eric dot weddington at atmel dot com @ 2008-10-30 20:44 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #6 from eric dot weddington at atmel dot com  2008-10-30 20:42 -------
(In reply to comment #5)
> (In reply to comment #3)
> > 
> > Note that AVR has 8-bit chars, 16-bit ints and pointers, 32-bit longs.
> 
> Just a guess, given the above: for unsigned char b, b*1000 is signed integer
> and it may overflow, so probably this is causing the warning. Perhaps we should
> only run this testcase with int32plus targets.

This is what happened on bug #37663 recently. 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
                   ` (5 preceding siblings ...)
  2008-10-30 20:44 ` eric dot weddington at atmel dot com
@ 2008-10-30 21:19 ` manu at gcc dot gnu dot org
  2008-10-31  4:28 ` eric dot weddington at atmel dot com
                   ` (3 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: manu at gcc dot gnu dot org @ 2008-10-30 21:19 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #7 from manu at gcc dot gnu dot org  2008-10-30 21:17 -------
Eric,

Could you modify the testcase to use 100 instead of 1000 and run it under AVR?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
                   ` (6 preceding siblings ...)
  2008-10-30 21:19 ` manu at gcc dot gnu dot org
@ 2008-10-31  4:28 ` eric dot weddington at atmel dot com
  2009-02-07 15:40 ` manu at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: eric dot weddington at atmel dot com @ 2008-10-31  4:28 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #8 from eric dot weddington at atmel dot com  2008-10-31 04:26 -------
(In reply to comment #7)
> Eric,
> 
> Could you modify the testcase to use 100 instead of 1000 and run it under AVR?
> 

The test is successful if the 1000 is changed to 100.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
                   ` (7 preceding siblings ...)
  2008-10-31  4:28 ` eric dot weddington at atmel dot com
@ 2009-02-07 15:40 ` manu at gcc dot gnu dot org
  2009-03-16 20:01 ` janis at gcc dot gnu dot org
  2009-05-01 14:37 ` manu at gcc dot gnu dot org
  10 siblings, 0 replies; 12+ messages in thread
From: manu at gcc dot gnu dot org @ 2009-02-07 15:40 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #9 from manu at gcc dot gnu dot org  2009-02-07 15:40 -------
Is this fixed? I think the solution was clear.


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
                   ` (8 preceding siblings ...)
  2009-02-07 15:40 ` manu at gcc dot gnu dot org
@ 2009-03-16 20:01 ` janis at gcc dot gnu dot org
  2009-05-01 14:37 ` manu at gcc dot gnu dot org
  10 siblings, 0 replies; 12+ messages in thread
From: janis at gcc dot gnu dot org @ 2009-03-16 20:01 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #10 from janis at gcc dot gnu dot org  2009-03-16 20:01 -------
Subject: Bug 37960

Author: janis
Date: Mon Mar 16 20:01:15 2009
New Revision: 144892

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=144892
Log:
        PR testsuite/37960
        * gcc.dg/pr11492.c: Replace constant and remove xfail.

Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/pr11492.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

* [Bug testsuite/37960] FAIL: gcc.dg/pr11492.c  (test for bogus messages, line 8)
  2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
                   ` (9 preceding siblings ...)
  2009-03-16 20:01 ` janis at gcc dot gnu dot org
@ 2009-05-01 14:37 ` manu at gcc dot gnu dot org
  10 siblings, 0 replies; 12+ messages in thread
From: manu at gcc dot gnu dot org @ 2009-05-01 14:37 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #11 from manu at gcc dot gnu dot org  2009-05-01 14:37 -------
FIXED by Janis.


-- 

manu at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37960


^ permalink raw reply	[flat|nested] 12+ messages in thread

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2008-10-30 18:57 [Bug testsuite/37960] New: [4.4 Regression] FAIL: gcc.dg/pr11492.c (test for bogus messages, line 8) eric dot weddington at atmel dot com
2008-10-30 18:58 ` [Bug testsuite/37960] " eric dot weddington at atmel dot com
2008-10-30 19:07 ` manu at gcc dot gnu dot org
2008-10-30 20:00 ` eric dot weddington at atmel dot com
2008-10-30 20:19 ` [Bug testsuite/37960] " manu at gcc dot gnu dot org
2008-10-30 20:29 ` manu at gcc dot gnu dot org
2008-10-30 20:44 ` eric dot weddington at atmel dot com
2008-10-30 21:19 ` manu at gcc dot gnu dot org
2008-10-31  4:28 ` eric dot weddington at atmel dot com
2009-02-07 15:40 ` manu at gcc dot gnu dot org
2009-03-16 20:01 ` janis at gcc dot gnu dot org
2009-05-01 14:37 ` manu at gcc dot gnu dot org

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