: unassigned at gcc dot gnu dot org
ReportedBy: apl at alum dot mit dot edu
GCC build triplet: i6868-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28642
--- Comment #1 from apl at alum dot mit dot edu 2006-08-07 18:27 ---
Created an attachment (id=12040)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12040action=view)
test case causing ICE
compiled with: g++ -c ice.cxx
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28642
--- Comment #2 from apl at alum dot mit dot edu 2006-08-07 18:34 ---
Amending the description
attribute ((may_alias)) in a union causes ICE.
I'm using the 7/15/2006 snapshot of 4.2
I realize that unions are implicitly 'aliased', but in fact this problem was
encountered while I
--- Comment #5 from apl at alum dot mit dot edu 2006-08-03 22:51 ---
issuing an error here probably will cause you to violate SFINAE as well.
And to my mind as a 'user', the QOI issue is that an optimization flag is
interfering with a perfectly reasonable behavior when I don't
--- Comment #7 from apl at alum dot mit dot edu 2006-07-05 18:50 ---
I think that this fix may have been too aggressive. I have a templated class
with a member function that does a dynamic_cast. With 4.2, I'm getting
errors when
I compile this template, despite the fact that I don't
--- Comment #8 from apl at alum dot mit dot edu 2006-07-05 19:08 ---
Created an attachment (id=11835)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11835action=view)
protection against dynamic_cast with -fno-rtti is too eager
Here's a test that NEVER instantiates the template
with -fno-rtti
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: apl at alum dot mit dot edu
http://gcc.gnu.org/bugzilla
--- Comment #1 from apl at alum dot mit dot edu 2006-07-05 19:15 ---
Created an attachment (id=11836)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11836action=view)
test generating error
compile with
g++ -fno-rtti
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28275
--- Comment #2 from apl at alum dot mit dot edu 2006-07-05 19:16 ---
Ideally, this should not produce an error UNLESS you invoke
derivedT::upcast()
from within a compilation unit under the influence of -fno-rtti
--
apl at alum dot mit dot edu changed:
What|Removed
--- Comment #18 from apl at alum dot mit dot edu 2006-05-14 14:40 ---
I don't understand why this was changed by sayle to known to work on 4.1.0,
when at least ONE of the test cases (b.cxx) demonstrates the failure on 4.1.0
(for some reason bugzilla won't let me commit the above
: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: apl at alum dot mit dot edu
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla
--- Comment #1 from apl at alum dot mit dot edu 2006-03-31 15:32 ---
Created an attachment (id=11174)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11174action=view)
test case causing ICE
g++ -c -O1 ice.cxx
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26961
--- Comment #5 from apl at alum dot mit dot edu 2006-03-28 15:09 ---
Created an attachment (id=11135)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11135action=view)
simpler test that still fails in 4.x compilers
compile with
g++ -c -Werror -Wall -Wextra -O2 b.cxx
--
apl
--- Comment #6 from apl at alum dot mit dot edu 2006-03-28 15:21 ---
I was wrong, this is still broken in GCC 4.0.2 and 4.1.0 although the original
test case doesn't demonstrate the bug.
/tools/linux/gcc-4.1.0/bin/g++ -c -Werror -Wall -Wextra b.cxx -O2
cc1plus: warnings being treated
--- Comment #7 from apl at alum dot mit dot edu 2006-03-28 18:40 ---
It's not minor, it causes incorrect code to be generated because it folds the
expression to zero!
--
apl at alum dot mit dot edu changed:
What|Removed |Added
--- Comment #9 from apl at alum dot mit dot edu 2006-03-28 21:26 ---
Created an attachment (id=11145)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11145action=view)
simplified test case
--
apl at alum dot mit dot edu changed:
What|Removed
--- Comment #10 from apl at alum dot mit dot edu 2006-03-28 21:28 ---
No, you misread the parentheses. I've removed all the EXCESS ONES, leaving
answer = (UInt16(word 0x3700) == UInt16(0x3000))
(UInt16(word 0x8800) == UInt16(0x8000));
Showing that we're testing
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: apl at alum dot mit dot edu
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc
--- Comment #1 from apl at alum dot mit dot edu 2006-03-17 16:48 ---
Created an attachment (id=11063)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11063action=view)
g++ -Wall -Werror -Wextra -O2 ...
(almost) trivial test case...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id
--- Comment #3 from apl at alum dot mit dot edu 2006-03-17 17:04 ---
Any clue as to the specific patch? We build with -Wall -Wextra -Werror, and
won't be able to upgrade to gcc-4.x for at least another couple of months.
--
apl at alum dot mit dot edu changed:
What
: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: apl at alum dot mit dot edu
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux
--- Comment #1 from apl at alum dot mit dot edu 2006-03-09 19:43 ---
Created an attachment (id=11014)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11014action=view)
test causing ICE
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26622
--- Comment #2 from apl at alum dot mit dot edu 2006-03-09 19:49 ---
/tools/linux/gcc-4.1.0/bin/g++ -c ice.i
tmp.f_00.cxx: In member function 'void
CarbonDesignSystems__design::c_top::f_$block_selfcycle3_v_L7_253_()':
tmp.f_00.cxx:26432: error: unrecognizable insn:
(insn 176
: unassigned at gcc dot gnu dot org
ReportedBy: apl at alum dot mit dot edu
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18384
--
What|Removed |Added
Known to work||3.3.3 3.4.2 2.95.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18384
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