* [Bug fortran/24526] renamed variables from modules not visible in gdb
[not found] <bug-24526-4@http.gcc.gnu.org/bugzilla/>
@ 2011-06-23 15:34 ` tkoenig at gcc dot gnu.org
2011-06-23 16:12 ` burnus at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 4+ messages in thread
From: tkoenig at gcc dot gnu.org @ 2011-06-23 15:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24526
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2006-01-29 17:55:51 |2011-06-21 16:00
Summary|variables from modules not |renamed variables from
|visible in gdb |modules not visible in gdb
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2011-06-23 15:33:31 UTC ---
Things work now without variable renaming, but with it,
they sometimes don't work. Adjusting subject.
ig25@linux-fd1f:~/Krempel/GDB> cat rename.f90
module foo
implicit none
integer :: a_foo = 3
integer :: b_foo = 4
end module foo
module bar
use foo, only : b_bar => b_foo
implicit none
end module bar
module baz
implicit none
integer :: c_baz = 5
end module baz
program main
use foo, only : a_main => a_foo
use bar, only : b_main => b_bar
use baz, c_main => c_baz
implicit none
print *, a_main
print *, b_main
print *, c_main
end program main
ig25@linux-fd1f:~/Krempel/GDB> gdb ./a.out
GNU gdb (GDB) SUSE (6.8.91.20090930-2.4)
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-suse-linux".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/ig25/Krempel/GDB/a.out...done.
(gdb) b MAIN__
Breakpoint 1 at 0x40075f: file rename.f90, line 22.
(gdb) r
Starting program: /home/ig25/Krempel/GDB/a.out
warning: the debug information found in
"/usr/lib/debug//lib64/ld-2.10.1.so.debug" does not match
"/lib64/ld-linux-x86-64.so.2" (CRC mismatch).
warning: the debug information found in
"/usr/lib/debug/lib64/ld-2.10.1.so.debug" does not match
"/lib64/ld-linux-x86-64.so.2" (CRC mismatch).
Missing separate debuginfo for /lib64/ld-linux-x86-64.so.2
Try: zypper install -C
"debuginfo(build-id)=a121943782877c885215a25513d6bf0bfb6b6723"
warning: the debug information found in
"/usr/lib/debug//lib64/libc-2.10.1.so.debug" does not match "/lib64/libc.so.6"
(CRC mismatch).
warning: the debug information found in
"/usr/lib/debug/lib64/libc-2.10.1.so.debug" does not match "/lib64/libc.so.6"
(CRC mismatch).
Missing separate debuginfo for /lib64/libc.so.6
Try: zypper install -C
"debuginfo(build-id)=a4762e3dc63d9d17b92a985d53410c4931774ebc"
Breakpoint 1, MAIN__ () at rename.f90:22
22 print *, a_main
Current language: auto
The current source language is "auto; currently fortran".
(gdb) p a_main
$1 = 3
(gdb) p b_main
No symbol "b_main" in current context.
(gdb) p c_main
No symbol "c_main" in current context.
(gdb)
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug fortran/24526] renamed variables from modules not visible in gdb
[not found] <bug-24526-4@http.gcc.gnu.org/bugzilla/>
2011-06-23 15:34 ` [Bug fortran/24526] renamed variables from modules not visible in gdb tkoenig at gcc dot gnu.org
@ 2011-06-23 16:12 ` burnus at gcc dot gnu.org
2011-06-25 8:14 ` burnus at gcc dot gnu.org
2011-06-27 17:06 ` burnus at gcc dot gnu.org
3 siblings, 0 replies; 4+ messages in thread
From: burnus at gcc dot gnu.org @ 2011-06-23 16:12 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24526
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |burnus at gcc dot gnu.org
--- Comment #7 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-06-23 16:12:00 UTC ---
My impression is that this is a bug in GDB and not in GCC (cf. readelf output
below). For the following program, the result is: myvar is not found and gdb
prints the wrong variable of the two "var33": Namely, the renamed one from
"mod" and not the one of "mod2". Using "mod::var33" and "mod2::var33" works as
expected.
14 print *, myvar
(gdb)
33
15 print *, var33
(gdb)
-42
16 end program test
(gdb) p var33
$1 = 33
(gdb) p myvar
No symbol "myvar" in current context.
Test program:
module mod
integer :: var11 = 11, var22 = 22, var33 = 33
end module mod
module mod2
integer :: var33 = -42
end module mod2
program test
use mod, myvar => var33
use mod2 ! imports var33 == -42
implicit none
print *, var11 ! prints: 11
print *, myvar ! prints: 33
print *, var33 ! prints: -42
end program test
Readelf looks as follows:
[ 12f] subprogram
...
sibling (ref4) [ 1a5]
[ 153] imported_module
decl_file (data1) 1
decl_line (data1) 11
import (ref4) [ 1a5]
[ 15a] imported_module
decl_file (data1) 1
decl_line (data1) 10
import (ref4) [ 1cb]
sibling (ref4) [ 171]
[ 165] imported_declaration
decl_file (data1) 1
decl_line (data1) 10
name (strp) "myvar"
import (ref4) [ 1d6]
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug fortran/24526] renamed variables from modules not visible in gdb
[not found] <bug-24526-4@http.gcc.gnu.org/bugzilla/>
2011-06-23 15:34 ` [Bug fortran/24526] renamed variables from modules not visible in gdb tkoenig at gcc dot gnu.org
2011-06-23 16:12 ` burnus at gcc dot gnu.org
@ 2011-06-25 8:14 ` burnus at gcc dot gnu.org
2011-06-27 17:06 ` burnus at gcc dot gnu.org
3 siblings, 0 replies; 4+ messages in thread
From: burnus at gcc dot gnu.org @ 2011-06-25 8:14 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24526
--- Comment #8 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-06-25 08:13:38 UTC ---
GDB patch by Jan:
http://sourceware.org/ml/gdb-patches/2011-06/msg00378.html
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug fortran/24526] renamed variables from modules not visible in gdb
[not found] <bug-24526-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2011-06-25 8:14 ` burnus at gcc dot gnu.org
@ 2011-06-27 17:06 ` burnus at gcc dot gnu.org
3 siblings, 0 replies; 4+ messages in thread
From: burnus at gcc dot gnu.org @ 2011-06-27 17:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24526
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #9 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-06-27 16:54:03 UTC ---
(In reply to comment #7)
> My impression is that this is a bug in GDB and not in GCC
Thus, the original problem has been fixed at some point. (I think it was
Jakub's
2008-08-29 commit.)
Any recent FSF gdb should should be able to print module variables using the
<module>::<var> syntax - or directly the variable if one uses use-association.
I am not sure whether 7.2 handles it already or whether the 7.3 (branched, to
be released soon) is required. (Maybe 7.1 already did?)
Regarding the rename issue of comment 6: As written in comment 7/comment 8:
That's a GDB issue for which a patch exists (to be committed in the next
hours).
Thus, I close the PR now as FIXED. Please reopen - or fill a new PR with CCing
me - if a related/new issue pops up.
^ permalink raw reply [flat|nested] 4+ messages in thread