------- 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 on 2.6.15.4-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 on 2.6.9-RedHawk-2.3.5-debug
gdb 6.0
gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-49)
Problem verified on 2.6.9-42.0.3.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 on 2.6.23.1-42.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
