07-29-2002
You need to compile and link all its bits with the -g switch, and without the -fomit-frame-pointer switch. Actually, you don't need to recompile all of it, just the bits you're interested in debugging.
Most C Proggramers and users use gdb for debugging the codes, you may try it out. Also another tool you might find useful for debugging is `strace', which displays the system calls that a process makes. It has a multiplicity of other uses too, including figuring out what pathnames were compiled into binaries that you don't have the source for, exacerbating race conditions in programs that you suspect contain them, and generally learning how things work. The latest version of strace (currently 3.0.8) can be found at
ftp://ftp.std.com/pub/jrs/.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Please help, I have tried to run this program countless times and still nothing. Please tell me what I'm doing wrong.
$ cat>test
count=1
while
do
echo "5"
read number
echo $5
let count=count+ 1
done
exit 0
^C$ ksh test
$ ^C
$ ksh test
$
$ nothing happend (6 Replies)
Discussion started by: ctiamaria
6 Replies
2. UNIX for Advanced & Expert Users
Can anyone tell the commands we use for debugging a programm in dbx with explanation for each?
Iam totally new to unix environment (3 Replies)
Discussion started by: bogarams
3 Replies
3. Shell Programming and Scripting
Hello all sorry didnt know where to post it
i compiled simple program that using "System.getProperty("user.dir");"
now i compiled the program under directory foo and and its running great when i do "java myapp"
i included this directory in the $PATH env variable so i could see it fro any where... (1 Reply)
Discussion started by: umen
1 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I have a program in /opt/local/bin, my path in my .profile is
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
however when i type the program name it cannot find it, however i know the program is in /opt/local/bin?
Thanks (2 Replies)
Discussion started by: c19h28O2
2 Replies
5. Programming
I have made use of 'valgrind' and -finstrument-functions compiler option for debugging / analyzing code. Both the options lets us know the line / file being executed to some extent.
Is there a generic way that lets program dump the file:line it is getting executed dumped to a log file during... (3 Replies)
Discussion started by: uunniixx
3 Replies
6. UNIX for Dummies Questions & Answers
Hey, im editing the passwd file so that when the user ben logs in it runs my assign program.
I changed the last column from
to
Then when i log in i get...
There is no problem with the program because it runs fine when i open it normally.
Any help much appreciated. (8 Replies)
Discussion started by: RAFC_99
8 Replies
7. Programming
We have recently downloaded, installed and compiled gcc-3.0.4 code. gcc compiler has built successfully and we where able to compile some same test cpp file. I would like to know how we can modify gcc source code so that we add additional run time debugging statements like the binary in execution... (4 Replies)
Discussion started by: uunniixx
4 Replies
8. Shell Programming and Scripting
I have a bash script that launches another problem. I need to run that program under a certain user account. The script itself is run using 'sudo <scriptname>'.
#!/bin/bash
myprogram=...
exec "$myprogram"
How would this be done? (1 Reply)
Discussion started by: Carson Dyle
1 Replies
9. Programming
Subject: Debugging a program written in two languages
Platform: Linux (Kubuntu)
I am trying to debug a C application with bindings to some simple functions written in Ada using the GNAT Programming Studio IDE (GPS). The main entry point is in C. The debugger is gdb.
I managed to compile... (0 Replies)
Discussion started by: NiGHTS
0 Replies
10. Shell Programming and Scripting
have been trying for a few weeks not to get this program running. I am newer to programming and it has definitely been a challenge. I think my problem arises with my if statement. I can get it to append the name to the new file, but it simply appends the whole sequence to the file rather than... (3 Replies)
Discussion started by: haley6719
3 Replies
LEARN ABOUT FREEBSD
strace-log-merge
STRACE-LOG-MERGE(1) General Commands Manual STRACE-LOG-MERGE(1)
NAME
strace-log-merge - merge strace -ff -tt output
SYNOPSIS
strace-log-merge STRACE_LOG
strace-log-merge --help
DESCRIPTION
strace-log-merge merges the output of strace -ff -tt[t] command, prepending PID to each line and sorting the result using time stamp as a
key.
OPTIONS
--help Show program usage and exit.
STRACE_LOG
Output file name prefix of files produced by a strace -ff -tt[t] command.
EXIT STATUS
0 Success
Non-zero
Error occurred: either no argument specified (in that case a usage is printed), or something went wrong during the processing of
STRACE_LOG.* files.
USAGE EXAMPLE
$ strace -o sleepy -ff -tt -e trace=execve,nanosleep
sh -c 'sleep 0.1 & sleep 0.2 & sleep 0.3'
$ strace-log-merge sleepy | fold -w 72 -s
13475 21:13:52.040837 execve("/bin/sh", ["sh", "-c", "sleep 0.1 & sleep
0.2 & sleep 0."...], 0x7ffde54b2450 /* 33 vars */) = 0
13478 21:13:52.044050 execve("/bin/sleep", ["sleep", "0.3"],
0x5631be4f87a8 /* 33 vars */) = 0
13476 21:13:52.044269 execve("/bin/sleep", ["sleep", "0.1"],
0x5631be4f87a8 /* 33 vars */) = 0
13477 21:13:52.044389 execve("/bin/sleep", ["sleep", "0.2"],
0x5631be4f87a8 /* 33 vars */) = 0
13478 21:13:52.046207 nanosleep({tv_sec=0, tv_nsec=300000000}, NULL) = 0
13476 21:13:52.046303 nanosleep({tv_sec=0, tv_nsec=100000000}, NULL) = 0
13477 21:13:52.046318 nanosleep({tv_sec=0, tv_nsec=200000000}, NULL) = 0
13476 21:13:52.146852 +++ exited with 0 +++
13475 21:13:52.146942 --- SIGCHLD {si_signo=SIGCHLD,
si_code=CLD_EXITED, si_pid=13476, si_uid=1000, si_status=0, si_utime=0,
si_stime=0} ---
13477 21:13:52.247782 +++ exited with 0 +++
13475 21:13:52.247885 --- SIGCHLD {si_signo=SIGCHLD,
si_code=CLD_EXITED, si_pid=13477, si_uid=1000, si_status=0, si_utime=0,
si_stime=0} ---
13478 21:13:52.347680 +++ exited with 0 +++
13475 21:13:52.347786 --- SIGCHLD {si_signo=SIGCHLD,
si_code=CLD_EXITED, si_pid=13478, si_uid=1000, si_status=0, si_utime=0,
si_stime=0} ---
13475 21:13:52.348069 +++ exited with 0 +++
NOTES
strace-log-merge does not work well with strace logs generated by strace -tt invocation that pass midnight, as those lack the information
required for the proper sorting. Employing the -ttt option in the respective strace invocation should solve the problem.
BUGS
strace-log-merge does not perform any checks whether the files specified are in the correct format and implies that only files from a sin-
gle strace session match STRACE_LOG.* glob pattern.
HISTORY
The initial version of strace-log-merge was written by Denys Vlasenko in 2012.
REPORTING BUGS
Problems with strace-log-merge should be reported to the strace mailing list at <strace-devel@lists.sourceforge.net>.
SEE ALSO
strace(1)
strace UNKNOWN 2018-04-11 STRACE-LOG-MERGE(1)