| Title: | Digital Ladebug debugger |
| Moderator: | TLE::LUCIA |
| Created: | Fri Feb 28 1992 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 969 |
| Total number of notes: | 3959 |
I tried to use watch in Ladebug Debugger Version 4.0-33. It caught the
first change to the watched thing (actually, it caught a change in the
thing next to what I'm interested in).
(ladebug) watch (&sym->fe_specific)
[#2: watch 0x14090958 to 0x1409095f ]
(ladebug) cont
[2] The contents at address range 0x14090958 to 0x1409095f
was accessed by instruction 0x2443bf58
Old value = 335926240
New value = 2547053381407712
[2] stopped at [gem_st_insert_symbol_node:3358 0x2443bf5c]
(Cannot find source file GEMSRC/gem_st.bli)
(ladebug) 0x14090958 / X
0x14090958: 14090c881405d3e0
Continuation after the watch resulted in the debugger spinning
(ladebug) cont
... nothting happens as ladebug chews up CPU resources
Bevin explained to me what was happening, then he typed in the following
command.
(ladebug) ($pc)/10i
Ladebug Debugger Version 4.0-33 caught signal "Segmentation fault" (11).
This is an unexpected condition and may indicate the presence of a defect.
If you wish to report this, please include the stack trace that follows.
Diagnostic stack trace ...
PC is zero - stack trace not available.
end of diagnostic stack trace.
Compilation terminated.
Abort (core dumped)
He hemmmed over the result and said yes when I asked if I should post it.
August
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 896.1 | TLE::CHIU | Fri Mar 21 1997 17:33 | 5 | ||
Thanks for reporting this problem. Could I have a pointer to a reproducer for it? Caroline | |||||
| 896.2 | CXXC::REINIG | This too shall change | Mon Mar 24 1997 09:12 | 38 | |
Look in /usr/users/reinig/public for exx and abs.cxx
cxxosf> ladebug /usr/users/reinig/public/exx
Welcome to the Ladebug Debugger Version 4.0-33
------------------
object file name: /usr/users/reinig/public/exx
Reading symbolic information ...done
Directory search path for source files:
. /usr/users/reinig/public .
(ladebug) stop in note_sym_tuple
[#1: stop in void note_sym_tuple(GEM_TUPLE*, GEM_SYMBOL*) ]
(ladebug) run abs.cxx
[1] stopped at [note_sym_tuple:1488 0x6ffe45dc]
1488 efd = efd_of_gem_symbol(sym);
(ladebug) watch (&sym->fe_specific)
[#2: watch 0x14090ca0 to 0x14090ca7 ]
(ladebug) cont
[1] stopped at [note_sym_tuple:1488 0x6ffe45dc]
1488 efd = efd_of_gem_symbol(sym);
(ladebug) delete 1
(ladebug) cont
***press control C sometime after the continue.***
(ladebug) ($pc)/10i
Ladebug Debugger Version 4.0-33 caught signal "Segmentation fault" (11).
This is an unexpected condition and may indicate the presence of a defect.
If you wish to report this, please include the stack trace that follows.
Diagnostic stack trace ...
PC is zero - stack trace not available.
end of diagnostic stack trace.
Compilation terminated.
Abort (core dumped)
In the course of reproducing this I found that I can't always cause the
crash.
August
| |||||
| 896.3 | TLE::BRETT | Thu May 29 1997 16:16 | 1 | ||
All (?) ^C problems are fixed in BL38 | |||||