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* [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format
@ 2011-10-21 3:15 anitha.boyapati at atmel dot com
2011-10-21 3:17 ` [Bug debug/50816] " anitha.boyapati at atmel dot com
` (13 more replies)
0 siblings, 14 replies; 15+ messages in thread
From: anitha.boyapati at atmel dot com @ 2011-10-21 3:15 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
Bug #: 50816
Summary: [4.6.1] Discriminators are emitted in DWARF 2 format
Classification: Unclassified
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: debug
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: anitha.boyapati@atmel.com
Created attachment 25566
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25566
testcase to reproduce the bug
GCC 4.6.1 emits discriminators even in dwarf2 format. For e.g,
$avr-gcc test.c -gstrict-dwarf -S -mmcu=atxmega128a1 -g -gdwarf-2
It gives the following assembly:
delay_ms:
.LFB0:
.file 1 "test.c"
.loc 1 3 0
push r28
...
.L5:
.loc 1 9 0
std Y+3,__zero_reg__
std Y+4,__zero_reg__
rjmp .L3
.L4:
.loc 1 9 0 is_stmt 0 discriminator 2
ldd r24,Y+3
ldd r25,Y+4
...
Version:
$ avr-gcc -v
Using built-in specs.
COLLECT_GCC=c:\Program Files\Atmel\AVR Tools\AVR
Toolchain\avr8-gnu-toolchain-de
v-win32_x86\bin\avr-gcc.exe
COLLECT_LTO_WRAPPER=c:/program files/atmel/avr tools/avr
toolchain/avr8-gnu-tool
chain-dev-win32_x86/bin/../libexec/gcc/avr/4.6.1/lto-wrapper.exe
Target: avr
...
Thread model: single
gcc version 4.6.1
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
@ 2011-10-21 3:17 ` anitha.boyapati at atmel dot com
2011-10-21 3:21 ` anitha.boyapati at atmel dot com
` (12 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: anitha.boyapati at atmel dot com @ 2011-10-21 3:17 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
--- Comment #1 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-10-21 03:17:20 UTC ---
http://gcc.gnu.org/ml/gcc/2011-10/msg00348.html
The fix in trunk should be backported to gcc-4_6-branch.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
2011-10-21 3:17 ` [Bug debug/50816] " anitha.boyapati at atmel dot com
@ 2011-10-21 3:21 ` anitha.boyapati at atmel dot com
2011-10-21 13:08 ` anitha.boyapati at atmel dot com
` (11 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: anitha.boyapati at atmel dot com @ 2011-10-21 3:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
Anitha Boyapati <anitha.boyapati at atmel dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |AVR
Known to work| |4.5.1
Known to fail| |4.6.1
--- Comment #2 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-10-21 03:21:12 UTC ---
Severity set to major because it stops us from using gcc-4.6.1 to process dwarf
2 information. The dwarf 2 parser gets confused reading debug_line section.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
2011-10-21 3:17 ` [Bug debug/50816] " anitha.boyapati at atmel dot com
2011-10-21 3:21 ` anitha.boyapati at atmel dot com
@ 2011-10-21 13:08 ` anitha.boyapati at atmel dot com
2011-10-23 10:23 ` anitha.boyapati at atmel dot com
` (10 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: anitha.boyapati at atmel dot com @ 2011-10-21 13:08 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
--- Comment #3 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-10-21 13:07:33 UTC ---
Can someone confirm this and fix this? We are blocked otherwise :-(
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (2 preceding siblings ...)
2011-10-21 13:08 ` anitha.boyapati at atmel dot com
@ 2011-10-23 10:23 ` anitha.boyapati at atmel dot com
2011-10-23 22:48 ` gjl at gcc dot gnu.org
` (9 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: anitha.boyapati at atmel dot com @ 2011-10-23 10:23 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
Anitha Boyapati <anitha.boyapati at atmel dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rth at gcc dot gnu.org
--- Comment #4 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-10-23 10:22:49 UTC ---
I think it can be fixed for gcc 4.6.2 release since the candidate is around to
be released.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (3 preceding siblings ...)
2011-10-23 10:23 ` anitha.boyapati at atmel dot com
@ 2011-10-23 22:48 ` gjl at gcc dot gnu.org
2011-10-23 22:50 ` gjl at gcc dot gnu.org
` (8 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: gjl at gcc dot gnu.org @ 2011-10-23 22:48 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
Georg-Johann Lay <gjl at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gjl at gcc dot gnu.org
--- Comment #5 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2011-10-23 22:47:44 UTC ---
Please probide a testcase according to http://gcc.gnu.org/bugs/#need
- Please, no external includes
- Please, supply the configue options
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (4 preceding siblings ...)
2011-10-23 22:48 ` gjl at gcc dot gnu.org
@ 2011-10-23 22:50 ` gjl at gcc dot gnu.org
2011-10-24 4:19 ` anitha.boyapati at atmel dot com
` (7 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: gjl at gcc dot gnu.org @ 2011-10-23 22:50 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
Georg-Johann Lay <gjl at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2011-10-23
Ever Confirmed|0 |1
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (5 preceding siblings ...)
2011-10-23 22:50 ` gjl at gcc dot gnu.org
@ 2011-10-24 4:19 ` anitha.boyapati at atmel dot com
2011-10-24 4:21 ` anitha.boyapati at atmel dot com
` (6 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: anitha.boyapati at atmel dot com @ 2011-10-24 4:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
--- Comment #6 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-10-24 04:18:10 UTC ---
(In reply to comment #5)
> Please probide a testcase according to http://gcc.gnu.org/bugs/#need
>
> - Please, no external includes
Sorry! I thought I have provided pre-processed file.
> - Please, supply the configue options
Configured with: avr8-gnu-toolchain-dev/src/gcc/configure
LDFLAGS=-L/toolsavr8-gnu-toolchain-dev/avr8-gnu-toolchain-dev-win32_x86/lib
CPPFLAGS= --target=avr --host=i686-mingw32 --build=x86_64-pc-linux-gnu
--prefix=avr8-gnu-toolchain-dev/avr8-gnu-toolchain-dev-win32_x86
--libdir=avr8-gnu-toolchain-dev/avr8-gnu-toolchain-dev-win32_x86/lib
--enable-languages=c,c++ --with-dwarf2 --enable-doc --disable-shared
--disable-libada --disable-libssp --disable-nls
--with-mpfr=avr8-gnu-toolchain-dev/avr8-gnu-toolchain-dev-win32_x86
--with-gmp=avr8-gnu-toolchain-dev/avr8-gnu-toolchain-dev-win32_x86
--with-mpc=avr8-gnu-toolchain-dev/avr8-gnu-toolchain-dev-win32_x86
--enable-win32-registry=a
vrtoolchain --enable-fixed-point
Thread model: single
gcc version 4.6.1
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (6 preceding siblings ...)
2011-10-24 4:19 ` anitha.boyapati at atmel dot com
@ 2011-10-24 4:21 ` anitha.boyapati at atmel dot com
2011-10-24 11:53 ` gjl at gcc dot gnu.org
` (5 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: anitha.boyapati at atmel dot com @ 2011-10-24 4:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
--- Comment #7 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-10-24 04:21:17 UTC ---
Created attachment 25583
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25583
Relevant testcase that is compilable
Compile it as:
$avr-gcc -mmcu=atxmega128a1 -g -gdwarf-2 test.c -S
The resulting file gives assembly interspersed with .loc directives (and
discriminators)
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (7 preceding siblings ...)
2011-10-24 4:21 ` anitha.boyapati at atmel dot com
@ 2011-10-24 11:53 ` gjl at gcc dot gnu.org
2011-10-24 18:10 ` jakub at gcc dot gnu.org
` (4 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: gjl at gcc dot gnu.org @ 2011-10-24 11:53 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
--- Comment #8 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2011-10-24 11:53:16 UTC ---
(In reply to comment #7)
> Compile it as:
>
> $avr-gcc -mmcu=atxmega128a1 -g -gdwarf-2 test.c -S
You are left alone with that: -mmcu=atxmega128a1 is not supported.
See avr-gcc --target-help for a list of supported devices.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (8 preceding siblings ...)
2011-10-24 11:53 ` gjl at gcc dot gnu.org
@ 2011-10-24 18:10 ` jakub at gcc dot gnu.org
2011-10-25 2:31 ` anitha.boyapati at atmel dot com
` (3 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-10-24 18:10 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-10-24 18:09:24 UTC ---
Author: jakub
Date: Mon Oct 24 18:09:21 2011
New Revision: 180398
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180398
Log:
PR debug/50816
* dwarf2out.c (dwarf2out_source_line): Emit discriminators only if
-gdwarf-4 or not -gstrict-dwarf.
Modified:
branches/gcc-4_6-branch/gcc/ChangeLog
branches/gcc-4_6-branch/gcc/dwarf2out.c
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (9 preceding siblings ...)
2011-10-24 18:10 ` jakub at gcc dot gnu.org
@ 2011-10-25 2:31 ` anitha.boyapati at atmel dot com
2011-10-25 2:34 ` anitha.boyapati at atmel dot com
` (2 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: anitha.boyapati at atmel dot com @ 2011-10-25 2:31 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
--- Comment #10 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-10-25 02:31:12 UTC ---
(In reply to comment #9)
> Author: jakub
> Date: Mon Oct 24 18:09:21 2011
> New Revision: 180398
>
> URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180398
> Log:
> PR debug/50816
> * dwarf2out.c (dwarf2out_source_line): Emit discriminators only if
> -gdwarf-4 or not -gstrict-dwarf.
>
> Modified:
> branches/gcc-4_6-branch/gcc/ChangeLog
> branches/gcc-4_6-branch/gcc/dwarf2out.c
Thanks Jakub. I thought this suffices:
http://gcc.gnu.org/viewcvs/trunk/gcc/dwarf2out.c?r1=171846&r2=171852&diff_format=h
This however requires us to use -gstrict-dwarf option.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (10 preceding siblings ...)
2011-10-25 2:31 ` anitha.boyapati at atmel dot com
@ 2011-10-25 2:34 ` anitha.boyapati at atmel dot com
2011-10-25 8:06 ` jakub at gcc dot gnu.org
2011-10-28 21:43 ` gjl at gcc dot gnu.org
13 siblings, 0 replies; 15+ messages in thread
From: anitha.boyapati at atmel dot com @ 2011-10-25 2:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
--- Comment #11 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-10-25 02:33:50 UTC ---
(In reply to comment #8)
> (In reply to comment #7)
> > Compile it as:
> >
> > $avr-gcc -mmcu=atxmega128a1 -g -gdwarf-2 test.c -S
>
> You are left alone with that: -mmcu=atxmega128a1 is not supported.
>
> See avr-gcc --target-help for a list of supported devices.
ok. The bug holds good for any device. Infact '-mmcu' can be dropped.
$avr-gcc -g -gdwarf-2 test.c -S
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (11 preceding siblings ...)
2011-10-25 2:34 ` anitha.boyapati at atmel dot com
@ 2011-10-25 8:06 ` jakub at gcc dot gnu.org
2011-10-28 21:43 ` gjl at gcc dot gnu.org
13 siblings, 0 replies; 15+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-10-25 8:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution| |FIXED
--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-10-25 08:05:17 UTC ---
If you for whatever weird reason use assembler that handles discriminators, but
debugger or other part of the toolchain that doesn't, then yes, you need
-gstrict-dwarf. If you used assembler that doesn't handle discriminators, gcc
wouldn't emit them obviously.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug debug/50816] [4.6.1] Discriminators are emitted in DWARF 2 format
2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
` (12 preceding siblings ...)
2011-10-25 8:06 ` jakub at gcc dot gnu.org
@ 2011-10-28 21:43 ` gjl at gcc dot gnu.org
13 siblings, 0 replies; 15+ messages in thread
From: gjl at gcc dot gnu.org @ 2011-10-28 21:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
Georg-Johann Lay <gjl at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-debug
Known to work| |4.6.2
Version|unknown |4.6.1
Target Milestone|--- |4.6.2
^ permalink raw reply [flat|nested] 15+ messages in thread
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2011-10-21 3:15 [Bug debug/50816] New: [4.6.1] Discriminators are emitted in DWARF 2 format anitha.boyapati at atmel dot com
2011-10-21 3:17 ` [Bug debug/50816] " anitha.boyapati at atmel dot com
2011-10-21 3:21 ` anitha.boyapati at atmel dot com
2011-10-21 13:08 ` anitha.boyapati at atmel dot com
2011-10-23 10:23 ` anitha.boyapati at atmel dot com
2011-10-23 22:48 ` gjl at gcc dot gnu.org
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2011-10-24 4:19 ` anitha.boyapati at atmel dot com
2011-10-24 4:21 ` anitha.boyapati at atmel dot com
2011-10-24 11:53 ` gjl at gcc dot gnu.org
2011-10-24 18:10 ` jakub at gcc dot gnu.org
2011-10-25 2:31 ` anitha.boyapati at atmel dot com
2011-10-25 2:34 ` anitha.boyapati at atmel dot com
2011-10-25 8:06 ` jakub at gcc dot gnu.org
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