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* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
@ 2005-10-13 11:52 ` nathan at gcc dot gnu dot org
  2005-10-14 12:55 ` cvs-commit at gcc dot gnu dot org
                   ` (10 subsequent siblings)
  11 siblings, 0 replies; 18+ messages in thread
From: nathan at gcc dot gnu dot org @ 2005-10-13 11:52 UTC (permalink / raw)
  To: gcc-bugs



-- 

nathan at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |nathan at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2005-07-18 17:27:27         |2005-10-13 11:52:39
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
  2005-10-13 11:52 ` [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843 nathan at gcc dot gnu dot org
@ 2005-10-14 12:55 ` cvs-commit at gcc dot gnu dot org
  2005-10-14 13:00 ` nathan at gcc dot gnu dot org
                   ` (9 subsequent siblings)
  11 siblings, 0 replies; 18+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-10-14 12:55 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #7 from cvs-commit at gcc dot gnu dot org  2005-10-14 12:55 -------
Subject: Bug 22551

CVSROOT:        /cvs/gcc
Module name:    gcc
Changes by:     nathan@gcc.gnu.org      2005-10-14 12:55:33

Modified files:
        gcc            : ChangeLog c-common.c 
        gcc/testsuite  : ChangeLog 
Added files:
        gcc/testsuite/g++.dg/other: switch2.C 

Log message:
        .:
        PR c++/22551
        * c-common.c (c_add_case_label): Clear LOW_VALUE and HIGH_VALUE's
        overflow flags.  Refactor some conditionals.
        testsuite:
        PR c++/22551
        * g++.dg/other/switch2.C: New.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.10156&r2=2.10157
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-common.c.diff?cvsroot=gcc&r1=1.655&r2=1.656
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.6190&r2=1.6191
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/other/switch2.C.diff?cvsroot=gcc&r1=NONE&r2=1.1


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
  2005-10-13 11:52 ` [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843 nathan at gcc dot gnu dot org
  2005-10-14 12:55 ` cvs-commit at gcc dot gnu dot org
@ 2005-10-14 13:00 ` nathan at gcc dot gnu dot org
  2005-10-14 13:01 ` cvs-commit at gcc dot gnu dot org
                   ` (8 subsequent siblings)
  11 siblings, 0 replies; 18+ messages in thread
From: nathan at gcc dot gnu dot org @ 2005-10-14 13:00 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #8 from nathan at gcc dot gnu dot org  2005-10-14 13:00 -------
fixed mainline and 4.0
2005-10-14  Nathan Sidwell  <nathan@codesourcery.com>

        PR c++/22551
        * c-common.c (c_add_case_label): Clear LOW_VALUE and HIGH_VALUE's
        overflow flags.  Refactor some conditionals.


-- 

nathan at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
                   ` (2 preceding siblings ...)
  2005-10-14 13:00 ` nathan at gcc dot gnu dot org
@ 2005-10-14 13:01 ` cvs-commit at gcc dot gnu dot org
  2005-10-16  9:02 ` nathan at gcc dot gnu dot org
                   ` (7 subsequent siblings)
  11 siblings, 0 replies; 18+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-10-14 13:01 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #9 from cvs-commit at gcc dot gnu dot org  2005-10-14 13:00 -------
Subject: Bug 22551

CVSROOT:        /cvs/gcc
Module name:    gcc
Branch:         gcc-4_0-branch
Changes by:     nathan@gcc.gnu.org      2005-10-14 13:00:38

Modified files:
        gcc            : ChangeLog c-common.c 
        gcc/testsuite  : ChangeLog 
Added files:
        gcc/testsuite/g++.dg/other: switch2.C 

Log message:
        .:
        PR c++/22551
        * c-common.c (c_add_case_label): Clear LOW_VALUE and HIGH_VALUE's
        overflow flags.  Refactor some conditionals.
        testsuite:
        PR c++/22551
        * g++.dg/other/switch2.C: New.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.464&r2=2.7592.2.465
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-common.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.606.2.8&r2=1.606.2.9
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.455&r2=1.5084.2.456
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/other/switch2.C.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
                   ` (3 preceding siblings ...)
  2005-10-14 13:01 ` cvs-commit at gcc dot gnu dot org
@ 2005-10-16  9:02 ` nathan at gcc dot gnu dot org
  2005-10-16 22:07 ` mmitchel at gcc dot gnu dot org
                   ` (6 subsequent siblings)
  11 siblings, 0 replies; 18+ messages in thread
From: nathan at gcc dot gnu dot org @ 2005-10-16  9:02 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #10 from nathan at gcc dot gnu dot org  2005-10-16 09:02 -------
something is not quite right ...


-- 

nathan at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
                   ` (4 preceding siblings ...)
  2005-10-16  9:02 ` nathan at gcc dot gnu dot org
@ 2005-10-16 22:07 ` mmitchel at gcc dot gnu dot org
  2005-10-17  8:36 ` nathan at gcc dot gnu dot org
                   ` (5 subsequent siblings)
  11 siblings, 0 replies; 18+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2005-10-16 22:07 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #11 from mmitchel at gcc dot gnu dot org  2005-10-16 22:06 -------
The new switch2.C test is failing for me.  In fact, I'm not sure why we should
see overflow warnings on these expressions; isn't "0x80000000" INT_MIN?  In
that case, INT_MIN + 1 does not overflow, does it?  The C front end in GCC
3.4.x does not warn about the equivalent C program.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
                   ` (5 preceding siblings ...)
  2005-10-16 22:07 ` mmitchel at gcc dot gnu dot org
@ 2005-10-17  8:36 ` nathan at gcc dot gnu dot org
  2005-10-17 13:54 ` cvs-commit at gcc dot gnu dot org
                   ` (4 subsequent siblings)
  11 siblings, 0 replies; 18+ messages in thread
From: nathan at gcc dot gnu dot org @ 2005-10-17  8:36 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #12 from nathan at gcc dot gnu dot org  2005-10-17 08:36 -------
the overflow happens in the static constant assignment 'int b = 0x80000000'
assigns an unsigned long to an int, and overflows.  The int_cst as b's
DCL_INITIAL has the overflow flag set.  I rejected clearing the overflow flag
at that point, because I was worried about other overflow paths on the case
label expression (although I failed to excite any).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
                   ` (6 preceding siblings ...)
  2005-10-17  8:36 ` nathan at gcc dot gnu dot org
@ 2005-10-17 13:54 ` cvs-commit at gcc dot gnu dot org
  2005-10-17 13:57 ` nathan at gcc dot gnu dot org
                   ` (3 subsequent siblings)
  11 siblings, 0 replies; 18+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-10-17 13:54 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #13 from cvs-commit at gcc dot gnu dot org  2005-10-17 13:54 -------
Subject: Bug 22551

CVSROOT:        /cvs/gcc
Module name:    gcc
Changes by:     nathan@gcc.gnu.org      2005-10-17 13:54:34

Modified files:
        gcc            : ChangeLog c-common.c 
        gcc/testsuite  : ChangeLog 
        gcc/testsuite/g++.dg/other: switch2.C 

Log message:
        .:
        PR c++/22551
        * c-common.c (c_add_case_label): Revert my 2005-10-14 clearing of
        overflow flags.
        testsuite:
        PR c++/22551
        * g++.dg/other/switch2.C: Remove expected warnings.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.10172&r2=2.10173
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-common.c.diff?cvsroot=gcc&r1=1.656&r2=1.657
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.6203&r2=1.6204
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/other/switch2.C.diff?cvsroot=gcc&r1=1.1&r2=1.2


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
                   ` (7 preceding siblings ...)
  2005-10-17 13:54 ` cvs-commit at gcc dot gnu dot org
@ 2005-10-17 13:57 ` nathan at gcc dot gnu dot org
  2005-10-17 13:57 ` cvs-commit at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  11 siblings, 0 replies; 18+ messages in thread
From: nathan at gcc dot gnu dot org @ 2005-10-17 13:57 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #14 from nathan at gcc dot gnu dot org  2005-10-17 13:57 -------
refixed
2005-10-17  Nathan Sidwell  <nathan@codesourcery.com>

        PR c++/22551
        * c-common.c (c_add_case_label): Revert my 2005-10-14 clearing of
        overflow flags.

2005-10-17  Nathan Sidwell  <nathan@codesourcery.com>

        PR c++/22551
        * g++.dg/other/switch2.C: Remove expected warnings.


-- 

nathan at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
                   ` (8 preceding siblings ...)
  2005-10-17 13:57 ` nathan at gcc dot gnu dot org
@ 2005-10-17 13:57 ` cvs-commit at gcc dot gnu dot org
  2005-10-19 12:48 ` cvs-commit at gcc dot gnu dot org
  2005-10-19 12:50 ` nathan at gcc dot gnu dot org
  11 siblings, 0 replies; 18+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-10-17 13:57 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #15 from cvs-commit at gcc dot gnu dot org  2005-10-17 13:57 -------
Subject: Bug 22551

CVSROOT:        /cvs/gcc
Module name:    gcc
Branch:         gcc-4_0-branch
Changes by:     nathan@gcc.gnu.org      2005-10-17 13:57:37

Modified files:
        gcc            : ChangeLog c-common.c 
        gcc/testsuite  : ChangeLog 
        gcc/testsuite/g++.dg/other: switch2.C 

Log message:
        .:
        PR c++/22551
        * c-common.c (c_add_case_label): Revert my 2005-10-14 clearing of
        overflow flags.
        testsuite:
        PR c++/22551
        * g++.dg/other/switch2.C: Remove expected warnings.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.467&r2=2.7592.2.468
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-common.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.606.2.9&r2=1.606.2.10
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.462&r2=1.5084.2.463
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/other/switch2.C.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.1.2.1&r2=1.1.2.2


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
                   ` (9 preceding siblings ...)
  2005-10-17 13:57 ` cvs-commit at gcc dot gnu dot org
@ 2005-10-19 12:48 ` cvs-commit at gcc dot gnu dot org
  2005-10-19 12:50 ` nathan at gcc dot gnu dot org
  11 siblings, 0 replies; 18+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-10-19 12:48 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #16 from cvs-commit at gcc dot gnu dot org  2005-10-19 12:48 -------
Subject: Bug 22551

CVSROOT:        /cvs/gcc
Module name:    gcc
Branch:         gcc-4_0-branch
Changes by:     nathan@gcc.gnu.org      2005-10-19 12:48:03

Modified files:
        gcc/cp         : ChangeLog typeck2.c 

Log message:
        PR c++/22551
        * typeck2.c (digest_init): Clear overflow flags on the folded
        initializer.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.4648.2.147&r2=1.4648.2.148
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/typeck2.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.182.8.1&r2=1.182.8.2


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
       [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
                   ` (10 preceding siblings ...)
  2005-10-19 12:48 ` cvs-commit at gcc dot gnu dot org
@ 2005-10-19 12:50 ` nathan at gcc dot gnu dot org
  11 siblings, 0 replies; 18+ messages in thread
From: nathan at gcc dot gnu dot org @ 2005-10-19 12:50 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #17 from nathan at gcc dot gnu dot org  2005-10-19 12:50 -------
fix for 4.0 2005-10-19  Nathan Sidwell  <nathan@codesourcery.com>

        PR c++/22551
        * typeck2.c (digest_init): Clear overflow flags on the folded
        initializer.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
  2005-07-18 17:22 [Bug c++/22551] New: " emailwastefilter-bugzillagccorg at yahoo dot com
                   ` (4 preceding siblings ...)
  2005-09-12 20:48 ` pinskia at gcc dot gnu dot org
@ 2005-09-27 16:24 ` mmitchel at gcc dot gnu dot org
  5 siblings, 0 replies; 18+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2005-09-27 16:24 UTC (permalink / raw)
  To: gcc-bugs



-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.0.2                       |4.0.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
  2005-07-18 17:22 [Bug c++/22551] New: " emailwastefilter-bugzillagccorg at yahoo dot com
                   ` (3 preceding siblings ...)
  2005-09-10  3:17 ` pinskia at gcc dot gnu dot org
@ 2005-09-12 20:48 ` pinskia at gcc dot gnu dot org
  2005-09-27 16:24 ` mmitchel at gcc dot gnu dot org
  5 siblings, 0 replies; 18+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-12 20:48 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-12 20:48 -------
: Search converges between 2004-08-05-trunk (#505) and 2004-08-06-trunk (#506).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
  2005-07-18 17:22 [Bug c++/22551] New: " emailwastefilter-bugzillagccorg at yahoo dot com
                   ` (2 preceding siblings ...)
  2005-07-18 18:07 ` pinskia at gcc dot gnu dot org
@ 2005-09-10  3:17 ` pinskia at gcc dot gnu dot org
  2005-09-12 20:48 ` pinskia at gcc dot gnu dot org
  2005-09-27 16:24 ` mmitchel at gcc dot gnu dot org
  5 siblings, 0 replies; 18+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-09-10  3:17 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-10 03:17 -------
I think the front-end is not remarking the INTEGER_CST's TREE_OVERFLOW to be zero.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
  2005-07-18 17:22 [Bug c++/22551] New: " emailwastefilter-bugzillagccorg at yahoo dot com
  2005-07-18 17:41 ` [Bug c++/22551] [4.0/4.1 Regression] " pinskia at gcc dot gnu dot org
  2005-07-18 18:05 ` emailwastefilter-bugzillagccorg at yahoo dot com
@ 2005-07-18 18:07 ` pinskia at gcc dot gnu dot org
  2005-09-10  3:17 ` pinskia at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  5 siblings, 0 replies; 18+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-18 18:07 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-18 18:05 -------
If you add -pedantic and compile your example, you will see that we error out instead of accepting the 
code.

You might want to use unsigned instead of signed as signed overflow is undefined.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
  2005-07-18 17:22 [Bug c++/22551] New: " emailwastefilter-bugzillagccorg at yahoo dot com
  2005-07-18 17:41 ` [Bug c++/22551] [4.0/4.1 Regression] " pinskia at gcc dot gnu dot org
@ 2005-07-18 18:05 ` emailwastefilter-bugzillagccorg at yahoo dot com
  2005-07-18 18:07 ` pinskia at gcc dot gnu dot org
                   ` (3 subsequent siblings)
  5 siblings, 0 replies; 18+ messages in thread
From: emailwastefilter-bugzillagccorg at yahoo dot com @ 2005-07-18 18:05 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From emailwastefilter-bugzillagccorg at yahoo dot com  2005-07-18 18:03 -------
(In reply to comment #2)
> Hmm, 0x80000000+1 overflows which is invalid for constant expressions and
really should be 
> rejected.

The warnings seem on the money, but they should not cause the compiler to crash,
right?

The original code used 0xFFFE0000 in place of 0x80000000 and had around 26
warning messages before it crashed.  If there are only 4 warning messages, then
the compiler completes without crashing.  Starting with 0x80000000 - 2 lets the
compiler complete, as does commenting out one of the case statements.

Several obivous ways around this code are to use an enum, an unsigned int, or an
if-else if cascasde.  These all result in no warnings, the first two justly, the
last I'm not so sure.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
* [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843
  2005-07-18 17:22 [Bug c++/22551] New: " emailwastefilter-bugzillagccorg at yahoo dot com
@ 2005-07-18 17:41 ` pinskia at gcc dot gnu dot org
  2005-07-18 18:05 ` emailwastefilter-bugzillagccorg at yahoo dot com
                   ` (4 subsequent siblings)
  5 siblings, 0 replies; 18+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-18 17:41 UTC (permalink / raw)
  To: gcc-bugs


------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-18 17:27 -------
Hmm, 0x80000000+1 overflows which is invalid for constant expressions and really should be 
rejected.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-07-18 17:27:27
               date|                            |
            Summary|[ICE] in tree_low_cst, at   |[4.0/4.1 Regression] [ICE]
                   |tree.c:3843                 |in tree_low_cst, at
                   |                            |tree.c:3843
   Target Milestone|---                         |4.0.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22551


^ permalink raw reply	[flat|nested] 18+ messages in thread
end of thread, other threads:[~2005-10-19 12:50 UTC | newest]

Thread overview: 18+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
     [not found] <bug-22551-11017@http.gcc.gnu.org/bugzilla/>
2005-10-13 11:52 ` [Bug c++/22551] [4.0/4.1 Regression] [ICE] in tree_low_cst, at tree.c:3843 nathan at gcc dot gnu dot org
2005-10-14 12:55 ` cvs-commit at gcc dot gnu dot org
2005-10-14 13:00 ` nathan at gcc dot gnu dot org
2005-10-14 13:01 ` cvs-commit at gcc dot gnu dot org
2005-10-16  9:02 ` nathan at gcc dot gnu dot org
2005-10-16 22:07 ` mmitchel at gcc dot gnu dot org
2005-10-17  8:36 ` nathan at gcc dot gnu dot org
2005-10-17 13:54 ` cvs-commit at gcc dot gnu dot org
2005-10-17 13:57 ` nathan at gcc dot gnu dot org
2005-10-17 13:57 ` cvs-commit at gcc dot gnu dot org
2005-10-19 12:48 ` cvs-commit at gcc dot gnu dot org
2005-10-19 12:50 ` nathan at gcc dot gnu dot org
2005-07-18 17:22 [Bug c++/22551] New: " emailwastefilter-bugzillagccorg at yahoo dot com
2005-07-18 17:41 ` [Bug c++/22551] [4.0/4.1 Regression] " pinskia at gcc dot gnu dot org
2005-07-18 18:05 ` emailwastefilter-bugzillagccorg at yahoo dot com
2005-07-18 18:07 ` pinskia at gcc dot gnu dot org
2005-09-10  3:17 ` pinskia at gcc dot gnu dot org
2005-09-12 20:48 ` pinskia at gcc dot gnu dot org
2005-09-27 16:24 ` mmitchel at gcc dot gnu dot org

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