[Bug ada/35880] GNAT (GCC) Ada does not generate symbolic debug for shared memory
--- Comment #7 from charlet at gcc dot gnu dot org 2008-04-10 06:21 --- reopening -- charlet at gcc dot gnu dot org changed: What|Removed |Added Status|WAITING |NEW Ever Confirmed|0 |1 Last reconfirmed|-00-00 00:00:00 |2008-04-10 06:21:40 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35880
[Bug ada/35880] GNAT (GCC) Ada does not generate symbolic debug for shared memory
--- Comment #3 from charlet at gcc dot gnu dot org 2008-04-09 06:45 --- missing debug info is never really major, since there are always work arounds (like print statements). Note that there is close to zero chance that someone will look into your .bz2 file, let alone your README. Instructions (and test case simplification) should be part of the submission of a PR if you want someone to look at it. Arno -- charlet at gcc dot gnu dot org changed: What|Removed |Added Severity|major |normal Status|UNCONFIRMED |WAITING http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35880
[Bug ada/35880] GNAT (GCC) Ada does not generate symbolic debug for shared memory
--- Comment #4 from knoxj at att dot net 2008-04-09 15:19 --- Print statements work if you know what you want to look at. The application is an aircraft simulation by stimulating avionics black boxes. We use a debugger to examine state information while the simulation is running to try to determine problem causes. I spent 3 days condensing hundreds of thousands of source lines to the test case I submitted. I tried to provide a short test case to demonstrate the problem. I ended up with 14 files consisting of 2226 actual source lines. I thought I read in the submission guidelines that an attachment was acceptable in a case like this. If I should submit the file contents as a large file, please point me to a sample so I know how to format the various individual file contents. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35880
[Bug ada/35880] GNAT (GCC) Ada does not generate symbolic debug for shared memory
--- Comment #5 from charlet at adacore dot com 2008-04-09 15:25 --- Subject: Re: GNAT (GCC) Ada does not generate symbolic debug for shared memory The application is an aircraft simulation by stimulating avionics black boxes. We use a debugger to examine state information while the simulation is running to try to determine problem causes. Note that the GCC project is based on volunteers, so your PR may never get the high priority attention that you apparently require. For such critical usage, you may consider getting support for your compiler (or get familiar with the compiler to investigate this issue yourself). I thought I read in the submission guidelines that an attachment was acceptable in a case like this. If I should submit the file contents as a large file, please point me to a sample so I know how to format the various individual file contents. Having a tar file for sources is certainly fine. Having all the instructions and explanation inside a README in a tarball is an unnecessary indirection which can only delay review of your PR. Arno -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35880
[Bug ada/35880] GNAT (GCC) Ada does not generate symbolic debug for shared memory
--- Comment #6 from knoxj at att dot net 2008-04-09 16:19 ---
Thank you for your comments. This is my first free software bug report, so I'm
still learning the ropes. I have been submitting commercial vendor bug reports
for several decades, and old habits die hard.
README file contents :
The files listed below demonstrate the GNAT Ada compiler not generating 'gdb'
debug information correctly for shared memory.
'gdb' says
No definition of pacs_cp in current context.
NightView says
Identifier pacs_cp is not visible in the given context.
Problem first found on 2.6.18.8-RedHawk-4.2.2-trace
gdb Concurrent RedHawk Linux (6.3.0.0-1.63rh)
gcc version 3.4.6 20060404 (Red Hat 3.4.6-3)
Problem verified on2.6.15.4-RedHawk-4.1-debug
gdb Concurrent RedHawk Linux (6.3.0.0-1.63rh)
gcc version 3.4.4 20050721 (Red Hat 3.4.4-2)
Problem verified on2.6.9-RedHawk-2.3.5-debug
gdb 6.0
gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-49)
Problem verified on2.6.9-42.0.3.EL (Red Hat EL WS 4 update 4)
gdb Red Hat Linux (6.3.0.0-1.132.EL4rh)
gcc version 3.4.6 20060404 (Red Hat 3.4.6-3)
Problem verified on2.6.23.1-42.fc8
gdb Fedora (6.8-1.fc9)
gcc version 4.3.0 20080326 (Red Hat 4.3.0-5) (GCC)
===
makefile - build rules
ada_proclock.ads - Ada interface
proclock.h - C interface
proclock.c - C implementation
f15_shm.ld - 'ld' commands for shared memory layout
f15_shm.h- C interface
f15_shm.c- C implementation
f15_shm_tables.c - shared memory data tables
nh_base_types.ads- hardware representation
test_pacs_cp_package.ads - Ada data description
testshm.adb - Ada test program
pacs_cp.h - C data description
testshmc.c - C test program
===
Follow the steps below to reproduce the problem :
1. make clean
2. make
3. gdb testshma
'tb main'
'r'
'n' 7 times to get to Ada_Main_Program
's'
'n' 4 times
'ptype pacs_cp' to get No definition of pacs_cp in current context.
4. gdb testshmc
'tb main'
'r'
'n' 4 times
'ptype pacs_cp' to get type = volatile struct PACS_CP {
short int word[8192];
}
5. edit test_pacs_cp_package.ads
comment pragma IMPORT line
6. make
7. gdb testshma
'tb main'
'r'
'n' 7 times to get to Ada_Main_Program
's'
'n' 4 times
'ptype pacs_cp' to get type = record
word: array (1 .. 8192) of
nh_base_types.signed_half_word_type;
end record
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35880
[Bug ada/35880] GNAT (GCC) Ada does not generate symbolic debug for shared memory
--- Comment #1 from knoxj at att dot net 2008-04-09 02:59 --- Created an attachment (id=15451) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15451action=view) README, makefile, test source files README has file list description and step-by-step instructions to cause bug. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35880
[Bug ada/35880] GNAT (GCC) Ada does not generate symbolic debug for shared memory
--- Comment #2 from knoxj at att dot net 2008-04-09 03:01 --- README in attachment has file list description and step-by-step instructions to reproduce bug. -- knoxj at att dot net changed: What|Removed |Added CC||knoxj at att dot net http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35880
