* [Bug c/58092] BEQ (Branch on equal) jumps to wrong address (executes conditional code!)
2013-08-06 12:06 [Bug c/58092] New: BEQ (Branch on equal) jumps to wrong address (executes conditional code!) zajec5 at gmail dot com
@ 2013-08-06 12:08 ` zajec5 at gmail dot com
2013-08-06 12:17 ` zajec5 at gmail dot com
` (8 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: zajec5 at gmail dot com @ 2013-08-06 12:08 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58092
--- Comment #1 from Rafał Miłecki <zajec5 at gmail dot com> ---
Created attachment 30618
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30618&action=edit
Compiled version of test.c
Command I use to compile test.c:
mipsel-openwrt-linux-uclibc-gcc \
-I arch/mips/include \
-I arch/mips/include/generated \
-I arch/mips/include/asm/mach-bcm47xx \
-I arch/mips/include/asm/mach-generic \
-I include \
-include include/linux/kconfig.h \
-D__KERNEL__ -DMODULE \
-Wall -Wundef -Wstrict-prototypes -Wno-trigraphs
-Werror-implicit-function-declaration -Wno-format-security
-Wframe-larger-than=1024 -Wno-unused-but-set-variable
-Wdeclaration-after-statement -Wno-pointer-sign \
-fno-strict-aliasing -fno-common -fno-delete-null-pointer-checks
-fno-caller-saves -fno-stack-protector -fno-pic -pipe -fomit-frame-pointer
-femit-struct-debug-baseonly -fno-strict-overflow -fconserve-stack \
-mno-check-zero-division -mno-abicalls -mno-branch-likely -msoft-float
-mno-long-calls -ffreestanding -mabi=32 -march=mips32 -Wa,-mips32 -Wa,--trap \
-D CC_HAVE_ASM_GOTO \
-Os \
-c -o test.o test.c
>From gcc-bugs-return-427430-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 06 12:12:17 2013
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/58091] Non-ambiguous member lookup rejected
Date: Tue, 06 Aug 2013 12:12:00 -0000
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--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Generally speaking, this is a basic C++ issue, doesn't have to do with the
recent constexpr, and normally icc is very solid about those. Remember there
are also DRs, besides the published Standards. At the moment, I simply don't
know.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c/58092] BEQ (Branch on equal) jumps to wrong address (executes conditional code!)
2013-08-06 12:06 [Bug c/58092] New: BEQ (Branch on equal) jumps to wrong address (executes conditional code!) zajec5 at gmail dot com
2013-08-06 12:08 ` [Bug c/58092] " zajec5 at gmail dot com
@ 2013-08-06 12:17 ` zajec5 at gmail dot com
2013-08-06 12:51 ` mikpe at it dot uu.se
` (7 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: zajec5 at gmail dot com @ 2013-08-06 12:17 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58092
--- Comment #2 from Rafał Miłecki <zajec5 at gmail dot com> ---
### Decompiled object ###
00000000 <test>:
0: 24020002 li v0,2
4: 24030004 li v1,4
8: aca20000 sw v0,0(a1)
c: 10830002 beq a0,v1,18 <test+0x18>
10: 24020008 li v0,8
14: 8ca20040 lw v0,64(a1)
18: aca20040 sw v0,64(a1)
1c: 03e00008 jr ra
20: 00000000 nop
### Decompiled with my explanations ###
0: 24020002 li v0,2
4: 24030004 li v1,4
8: aca20000 sw v0,0(a1)
v0 (0x2) is stored in a1 unconditionally - this is fine
c: 10830002 beq a0,v1,18 <test+0x18>
10: 24020008 li v0,8
a0 (rev argument) is compared with v1 (0x4) - if equal CPU jumps to 0x18
14: 8ca20040 lw v0,64(a1)
the above line is executed to rev != 4
18: aca20040 sw v0,64(a1)
the above lins (store v0 in a1+64) is always executed!
it should be executed for rev==4 only
v0 is 0x8 by default, or some different value for rev != 4
1c: 03e00008 jr ra
20: 00000000 nop
>From gcc-bugs-return-427432-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 06 12:27:57 2013
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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/58014] vshuf-v2si.C fails at -O3 on hppa64
Date: Tue, 06 Aug 2013 12:27:00 -0000
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--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> ---
Introduced in r197845:
2013-04-12 Richard Biener <rguenther@suse.de>
* gimple.c (is_gimple_constant): Vector CONSTRUCTORs should
not be considered a gimple constant.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c/58092] BEQ (Branch on equal) jumps to wrong address (executes conditional code!)
2013-08-06 12:06 [Bug c/58092] New: BEQ (Branch on equal) jumps to wrong address (executes conditional code!) zajec5 at gmail dot com
2013-08-06 12:08 ` [Bug c/58092] " zajec5 at gmail dot com
2013-08-06 12:17 ` zajec5 at gmail dot com
@ 2013-08-06 12:51 ` mikpe at it dot uu.se
2013-08-06 14:43 ` zajec5 at gmail dot com
` (6 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: mikpe at it dot uu.se @ 2013-08-06 12:51 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58092
--- Comment #3 from Mikael Pettersson <mikpe at it dot uu.se> ---
Please attach the pre-processed test.i (gcc -E or -save-temps).
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c/58092] BEQ (Branch on equal) jumps to wrong address (executes conditional code!)
2013-08-06 12:06 [Bug c/58092] New: BEQ (Branch on equal) jumps to wrong address (executes conditional code!) zajec5 at gmail dot com
` (2 preceding siblings ...)
2013-08-06 12:51 ` mikpe at it dot uu.se
@ 2013-08-06 14:43 ` zajec5 at gmail dot com
2013-08-06 16:42 ` mikpe at it dot uu.se
` (5 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: zajec5 at gmail dot com @ 2013-08-06 14:43 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="UTF-8", Size: 2717 bytes --]
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58092
--- Comment #4 from Rafał Miłecki <zajec5 at gmail dot com> ---
Created attachment 30619
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30619&action=edit
test.i generated by adding -save-temps
Hi Mikael!
I added -save-temps at the end of my "mipsel-openwrt-linux-uclibc-gcc" call and
got warning:
mipsel-openwrt-linux-uclibc-gcc: warning: -pipe ignored because -save-temps
specified
and test.i of course.
By looking at decompiled version of test.o it seems to still contain the bug,
so ignored "-pipe" shouldn't hurt us.
Hope this is what you expected!
>From gcc-bugs-return-427442-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 06 15:16:41 2013
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From: "dje at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/58094] [4.9 Regression] IPA devirt testsuite errors
Date: Tue, 06 Aug 2013 15:16:00 -0000
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--- Comment #3 from David Edelsohn <dje at gcc dot gnu.org> ---
Created attachment 30620
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id0620&actioníit
ipa and tree dumps
-fdump-ipa-all -fdump-tree-all output file attached in gzipped tar file.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c/58092] BEQ (Branch on equal) jumps to wrong address (executes conditional code!)
2013-08-06 12:06 [Bug c/58092] New: BEQ (Branch on equal) jumps to wrong address (executes conditional code!) zajec5 at gmail dot com
` (3 preceding siblings ...)
2013-08-06 14:43 ` zajec5 at gmail dot com
@ 2013-08-06 16:42 ` mikpe at it dot uu.se
2013-08-06 21:28 ` [Bug target/58092] " zajec5 at gmail dot com
` (4 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: mikpe at it dot uu.se @ 2013-08-06 16:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58092
--- Comment #5 from Mikael Pettersson <mikpe at it dot uu.se> ---
I can't reproduce the wrong-code with 4.6.4. 4.7.2, or 4.8.1. They all
generate:
00000000 <test>:
0: 24020002 li v0,2
4: aca20000 sw v0,0(a1)
8: 24020004 li v0,4
c: 14820002 bne a0,v0,18 <test+0x18>
10: 24020008 li v0,8
14: aca20040 sw v0,64(a1)
18: 03e00008 jr ra
1c: 00000000 nop
which looks correct to me (not that I know MIPS very well).
Please try with a self-compiled gcc built from unmodified sources, or report
this to openwrt as your hacked gcc clearly indicated (see the bugurl in comment
#1).
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug target/58092] BEQ (Branch on equal) jumps to wrong address (executes conditional code!)
2013-08-06 12:06 [Bug c/58092] New: BEQ (Branch on equal) jumps to wrong address (executes conditional code!) zajec5 at gmail dot com
` (4 preceding siblings ...)
2013-08-06 16:42 ` mikpe at it dot uu.se
@ 2013-08-06 21:28 ` zajec5 at gmail dot com
2013-08-07 9:58 ` zajec5 at gmail dot com
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9 siblings, 0 replies; 11+ messages in thread
From: zajec5 at gmail dot com @ 2013-08-06 21:28 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58092
--- Comment #6 from Rafał Miłecki <zajec5 at gmail dot com> ---
OK, I've installed "cross-mips-linux-gcc" package from:
http://download.opensuse.org/repositories/home:/duwe:/crosstools/openSUSE_12.2/
and it works. After compiling test.c with:
> /opt/cross/bin/mips-linux-gcc -v
Using built-in specs.
COLLECT_GCC=/opt/cross/bin/mips-linux-gcc
COLLECT_LTO_WRAPPER=/opt/cross/libexec/gcc/mips-linux/4.5.3/lto-wrapper
Target: mips-linux
Configured with: ../configure --prefix=/opt/cross --enable-bootstrap=no
--build=x86_64-suse-linux --target=mips-linux --enable-languages=c,c++
--with-float=soft --disable-libmudflap --disable-multilib
Thread model: posix
gcc version 4.5.3 (GCC)
I got a correct test.o.
So this issue is specific to Linaro or OpenWrt.
>From gcc-bugs-return-427478-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Aug 06 21:43:14 2013
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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/58079] internal compiler error: in do_SUBST, at combine.c:711
Date: Tue, 06 Aug 2013 21:43:00 -0000
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| |l
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CC|rdsandiford at googlemail dot com |
Ever confirmed|0 |1
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug target/58092] BEQ (Branch on equal) jumps to wrong address (executes conditional code!)
2013-08-06 12:06 [Bug c/58092] New: BEQ (Branch on equal) jumps to wrong address (executes conditional code!) zajec5 at gmail dot com
` (5 preceding siblings ...)
2013-08-06 21:28 ` [Bug target/58092] " zajec5 at gmail dot com
@ 2013-08-07 9:58 ` zajec5 at gmail dot com
2013-08-07 10:41 ` zajec5 at gmail dot com
` (2 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: zajec5 at gmail dot com @ 2013-08-07 9:58 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58092
--- Comment #7 from Rafał Miłecki <zajec5 at gmail dot com> ---
I compiled two versions of gcc on my own:
1) gcc-4.6.4.tar.bz2
2) gcc-linaro-4.6-2012.12.tar.bz2
For both of them I've used binutils-2.22.tar.bz2
test.o compiled with gcc-4.6.4.tar.bz2
00000000 <test>:
0: 24020002 li v0,2
4: aca20000 sw v0,0(a1)
8: 24020004 li v0,4
c: 14820002 bne a0,v0,18 <test+0x18>
10: 24020008 li v0,8
14: aca20040 sw v0,64(a1)
18: 03e00008 jr ra
1c: 00000000 nop
test.o compiled with gcc-linaro-4.6-2012.12.tar.bz2
00000000 <test>:
0: 24020002 li v0,2
4: 24030004 li v1,4
8: aca20000 sw v0,0(a1)
c: 10830002 beq a0,v1,18 <test+0x18>
10: 24020008 li v0,8
14: 8ca20040 lw v0,64(a1)
18: aca20040 sw v0,64(a1)
1c: 03e00008 jr ra
20: 00000000 nop
So it seems to be Linaro fault. I'll report that problem to them.
>From gcc-bugs-return-427510-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 07 10:09:01 2013
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/58098] wrong return value of normal_distribution::min()
Date: Wed, 07 Aug 2013 10:09:00 -0000
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--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Note: it's indeed debatable whether lowest or -infinity is better. For now I'm
going to minimally change our code to use lowest, because we use max the other
side, and infinities aren't unconditionally available.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug target/58092] BEQ (Branch on equal) jumps to wrong address (executes conditional code!)
2013-08-06 12:06 [Bug c/58092] New: BEQ (Branch on equal) jumps to wrong address (executes conditional code!) zajec5 at gmail dot com
` (6 preceding siblings ...)
2013-08-07 9:58 ` zajec5 at gmail dot com
@ 2013-08-07 10:41 ` zajec5 at gmail dot com
2013-08-07 10:42 ` zajec5 at gmail dot com
2013-08-07 13:51 ` zajec5 at gmail dot com
9 siblings, 0 replies; 11+ messages in thread
From: zajec5 at gmail dot com @ 2013-08-07 10:41 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58092
--- Comment #8 from Rafał Miłecki <zajec5 at gmail dot com> ---
I found link to bug repository on https://support.linaro.org/home and reported
that issue to Linaro developers:
https://bugs.launchpad.net/gcc-linaro/+bug/1209171
Hope they'll handle this.
>From gcc-bugs-return-427513-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 07 10:42:18 2013
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/58099] [4.8/4.9 Regression] [F03] over-zealous procedure-pointer error checking
Date: Wed, 07 Aug 2013 10:42:00 -0000
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--- Comment #7 from janus at gcc dot gnu.org ---
The following patch makes the error go away, but (as expected) causes a failure
of proc_ptr_result_8.f90 in the testsuite ...
Index: gcc/fortran/expr.c
==================================================================--- gcc/fortran/expr.c (revision 201520)
+++ gcc/fortran/expr.c (working copy)
@@ -3581,14 +3581,6 @@ gfc_check_pointer_assign (gfc_expr *lvalue, gfc_ex
return false;
}
- if (!gfc_compare_interfaces (s2, s1, name, 0, 1,
- err, sizeof(err), NULL, NULL))
- {
- gfc_error ("Interface mismatch in procedure pointer assignment "
- "at %L: %s", &rvalue->where, err);
- return false;
- }
-
return true;
}
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug target/58092] BEQ (Branch on equal) jumps to wrong address (executes conditional code!)
2013-08-06 12:06 [Bug c/58092] New: BEQ (Branch on equal) jumps to wrong address (executes conditional code!) zajec5 at gmail dot com
` (7 preceding siblings ...)
2013-08-07 10:41 ` zajec5 at gmail dot com
@ 2013-08-07 10:42 ` zajec5 at gmail dot com
2013-08-07 13:51 ` zajec5 at gmail dot com
9 siblings, 0 replies; 11+ messages in thread
From: zajec5 at gmail dot com @ 2013-08-07 10:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58092
Rafał Miłecki <zajec5 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #9 from Rafał Miłecki <zajec5 at gmail dot com> ---
Not our bug
>From gcc-bugs-return-427515-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 07 10:53:24 2013
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/58099] [4.8/4.9 Regression] [F03] over-zealous procedure-pointer error checking
Date: Wed, 07 Aug 2013 10:53:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |janus at gcc dot gnu.org
--- Comment #8 from janus at gcc dot gnu.org ---
(In reply to janus from comment #7)
> The following patch makes the error go away, but (as expected) causes a
> failure of proc_ptr_result_8.f90 in the testsuite ...
... which can be made up for with this hunk:
Index: gcc/fortran/interface.c
==================================================================--- gcc/fortran/interface.c (revision 201520)
+++ gcc/fortran/interface.c (working copy)
@@ -1416,7 +1416,8 @@ gfc_compare_interfaces (gfc_symbol *s1, gfc_symbol
if (s1->attr.function && s2->attr.function)
{
/* If both are functions, check result characteristics. */
- if (!check_result_characteristics (s1, s2, errmsg, err_len))
+ if (!check_result_characteristics (s1, s2, errmsg, err_len)
+ || !check_result_characteristics (s2, s1, errmsg, err_len))
return 0;
}
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug target/58092] BEQ (Branch on equal) jumps to wrong address (executes conditional code!)
2013-08-06 12:06 [Bug c/58092] New: BEQ (Branch on equal) jumps to wrong address (executes conditional code!) zajec5 at gmail dot com
` (8 preceding siblings ...)
2013-08-07 10:42 ` zajec5 at gmail dot com
@ 2013-08-07 13:51 ` zajec5 at gmail dot com
9 siblings, 0 replies; 11+ messages in thread
From: zajec5 at gmail dot com @ 2013-08-07 13:51 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58092
Rafał Miłecki <zajec5 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|INVALID |FIXED
--- Comment #10 from Rafał Miłecki <zajec5 at gmail dot com> ---
Well... I spent more time testing that and it has appeared *to be* our bug. It
was a bug in 4.6.3 that was fixed in 4.6.4. Linaro was simply based on 4.6.3 at
some point.
>From gcc-bugs-return-427521-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 07 15:07:26 2013
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From: "rearnsha at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/56979] ICE in output_operand: invalid operand for code 'P'
Date: Wed, 07 Aug 2013 15:07:00 -0000
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Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Testing a patch.
^ permalink raw reply [flat|nested] 11+ messages in thread