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* Re: target/8507: [Cygwin] -fno-undersocring, -fno-underscore don't work
@ 2003-01-11 1:43 bangerth
0 siblings, 0 replies; 3+ messages in thread
From: bangerth @ 2003-01-11 1:43 UTC (permalink / raw)
To: bkausbk, gcc-bugs, gcc-prs, nobody
Old Synopsis: -fno-undersocring, -fno-underscore don't work
New Synopsis: [Cygwin] -fno-undersocring, -fno-underscore don't work
State-Changed-From-To: open->feedback
State-Changed-By: bangerth
State-Changed-When: Fri Jan 10 17:43:33 2003
State-Changed-Why:
Can you give a small program that shows the problem?
See the bug reporting instructions on gcc.gnu.org in case
you are in doubt what we would need.
Thanks
Wolfgang
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8507
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: target/8507: [Cygwin] -fno-undersocring, -fno-underscore don't work
@ 2003-05-12 11:28 steven
0 siblings, 0 replies; 3+ messages in thread
From: steven @ 2003-05-12 11:28 UTC (permalink / raw)
To: bkausbk, gcc-bugs, gcc-prs, nobody
Synopsis: [Cygwin] -fno-undersocring, -fno-underscore don't work
State-Changed-From-To: feedback->analyzed
State-Changed-By: steven
State-Changed-When: Mon May 12 11:26:15 2003
State-Changed-Why:
Feedback provided
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8507
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: target/8507: [Cygwin] -fno-undersocring, -fno-underscore don't work
@ 2003-01-11 12:46 Benjamin K.
0 siblings, 0 replies; 3+ messages in thread
From: Benjamin K. @ 2003-01-11 12:46 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR target/8507; it has been noted by GNATS.
>From bkausbk@web.de Mon Jan 13 00:57:58 2003
From: "Benjamin K." <bkausbk@web.de>
To: <bkausbk@web.de>,
<gcc-gnats@gcc.gnu.org>,
<gcc-prs@gcc.gnu.org>,
<gcc-bugs@gcc.gnu.org>,
<nobody@gcc.gnu.org>
Cc:
Subject: Re: target/8507: [Cygwin] -fno-undersocring, -fno-underscore don't work
Date: Sat, 11 Jan 2003 13:38:36 +0100
This is a multi-part message in MIME format.
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Content-Type: text/plain;
charset="Windows-1252"
Content-Transfer-Encoding: 7bit
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&p
r=8507
>Can you give a small program that shows the problem
This is compiler specific as I said before, and problem is whidly known who
is using c compilers for i386 windows platform.
See attachment for detailed information.
"some.o.hexdump" contains some more information about the problem.
There are 2 hexdumps, one which uses symbol underscores and the other
one don't use this underscores.
some.c is the source file ... needless to say it only contain one function.
Benjamin Kalytta
------=_NextPart_000_0003_01C2B976.BE468F90
Content-Type: application/octet-stream;
name="some.c"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="some.c"
int MyFunc(){
}
------=_NextPart_000_0003_01C2B976.BE468F90
Content-Type: application/octet-stream;
name="some.o.hexdump"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
filename="some.o.hexdump"
COFF OBJECT FILE DUMP:
00000000 4C 01 03 00 00 00 00 00 9C 00 00 00 0A 00 00 00 =
L.......=9C.......
00000010 00 00 05 00 2E 74 65 78 74 00 00 00 00 00 00 00 =
.....text.......
00000020 00 00 00 00 10 00 00 00 8C 00 00 00 00 00 00 00 =
........=8C.......
00000030 00 00 00 00 00 00 00 00 20 00 00 60 2E 64 61 74 ........ =
..`.dat
00000040 61 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
a...............
00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
................
00000060 40 00 00 C0 2E 62 73 73 00 00 00 00 00 00 00 00 =
@..=C0.bss........
00000070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
................
00000080 00 00 00 00 00 00 00 00 80 00 00 C0 55 89 E5 5D =
........=80..=C0U=89=E5]
00000090 C3 90 90 90 90 90 90 90 90 90 90 90 2E 66 69 6C =
=C3=90=90=90=90=90=90=90=90=90=90=90.fil
000000A0 65 00 00 00 00 00 00 00 FE FF 00 00 67 01 73 6F =
e.......=FE=FF..g.so
000000B0 6D 65 2E 63 00 00 00 00 00 00 00 00 00 00 00 00 =
me.c............
000000C0 5F 4D 79 46 75 6E 63 00 00 00 00 00 01 00 20 00 =
_MyFunc....... .
000000D0 02 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
................
000000E0 00 00 00 00 2E 74 65 78 74 00 00 00 00 00 00 00 =
.....text.......
000000F0 01 00 00 00 03 01 05 00 00 00 00 00 00 00 00 00 =
................
00000100 00 00 00 00 00 00 00 00 2E 64 61 74 61 00 00 00 =
.........data...
00000110 00 00 00 00 02 00 00 00 03 01 00 00 00 00 00 00 =
................
00000120 00 00 00 00 00 00 00 00 00 00 00 00 2E 62 73 73 =
.............bss
00000130 00 00 00 00 00 00 00 00 03 00 00 00 03 01 00 00 =
................
00000140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
................
00000150 04 00 00 00 ....
Symbol of function int MyFunc() will be "_MyFunc" as you see above.
Here the same thing with my modified version of GCC which don't produce =
any
underscore:
00000000 4C 01 03 00 00 00 00 00 9C 00 00 00 0A 00 00 00 =
L.......=9C.......
00000010 00 00 05 00 2E 74 65 78 74 00 00 00 00 00 00 00 =
.....text.......
00000020 00 00 00 00 10 00 00 00 8C 00 00 00 00 00 00 00 =
........=8C.......
00000030 00 00 00 00 00 00 00 00 20 00 00 60 2E 64 61 74 ........ =
..`.dat
00000040 61 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
a...............
00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
................
00000060 40 00 00 C0 2E 62 73 73 00 00 00 00 00 00 00 00 =
@..=C0.bss........
00000070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
................
00000080 00 00 00 00 00 00 00 00 80 00 00 C0 55 89 E5 5D =
........=80..=C0U=89=E5]
00000090 C3 90 90 90 90 90 90 90 90 90 90 90 2E 66 69 6C =
=C3=90=90=90=90=90=90=90=90=90=90=90.fil
000000A0 65 00 00 00 00 00 00 00 FE FF 00 00 67 01 73 6F =
e.......=FE=FF..g.so
000000B0 6D 65 2E 63 00 00 00 00 00 00 00 00 00 00 00 00 =
me.c............
000000C0 4D 79 46 75 6E 63 00 00 00 00 00 00 01 00 20 00 =
MyFunc........ .
000000D0 02 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
................
000000E0 00 00 00 00 2E 74 65 78 74 00 00 00 00 00 00 00 =
.....text.......
000000F0 01 00 00 00 03 01 05 00 00 00 00 00 00 00 00 00 =
................
00000100 00 00 00 00 00 00 00 00 2E 64 61 74 61 00 00 00 =
.........data...
00000110 00 00 00 00 02 00 00 00 03 01 00 00 00 00 00 00 =
................
00000120 00 00 00 00 00 00 00 00 00 00 00 00 2E 62 73 73 =
.............bss
00000130 00 00 00 00 00 00 00 00 03 00 00 00 03 01 00 00 =
................
00000140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
................
00000150 04 00 00 00 ....
As you can see here, symbol "MyFunc" don't have leading underscores.
You have to modify /gcc/gcc/config/i386/bsd.h
#define USER_LABEL_PREFIX "_" to
#define USER_LABEL_PREFIX ""
But there are some problems again, libgcc.a and some other libs contain
symbols with underscores, so using any of this lib function isn't =
possible with
my modified version.
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2003-01-11 1:43 target/8507: [Cygwin] -fno-undersocring, -fno-underscore don't work bangerth
2003-01-11 12:46 Benjamin K.
2003-05-12 11:28 steven
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