gdb dlopen error Waleska Georgia

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gdb dlopen error Waleska, Georgia

If that breakpoint is never hit, it's likely that you never actually exercise that line of code. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed There is absolutely no warranty for GDB. Full text and rfc822 format available.

This is probably what you see. All rights reserved. breakpoint f_cos See bug.7.1 attachment Additional info: bug.7.1 attachment ------------- foo.c --------------------- #include #include #include int main(int argc, char **argv) { void *handle; double (*cosine)(double); double res; char The one in particular is DDRAW.DLL, which I know nothing about > but needed by GLIDE2X.DLL.

Appease Your Google Overlords: Draw the "G" Logo Where are sudo's insults stored? Bug249995 - Broken breakpoints when debugging c++ dynamic library Summary: Broken breakpoints when debugging c++ dynamic library Status: RESOLVED FIXED Product: cnd Classification: Unclassified Component: Debugger Version: 8.0.2 Hardware: PC Linux To do so: set a breakpoint in main.c after dlopen. Developing web applications for long lifespan (20+ years) Word with the largest number of different phonetic vowel sounds Can Communism become a stable economic strategy?

Aurelien Jarno | GPG: 1024D/F1BCDB73 : :' : Debian developer | Electrical Engineer `. `' [email protected] | [email protected] `- people.debian.org/~aurel32 | www.aurel32.net Information forwarded to [email protected], GNU Libc Maintainers : Bug#496494; There you should change the Follow Fork Mode drop-down list value. What do I do when two squares are equally valid? Here are some similar questions that might be relevant: kgdb not returning control to gdb Read only mode in gdb Auditing of gdb commands gdb not launching app Tshark not running

Format For Printing -XML -Clone This Bug -Top of page First Last Prev Next This bug is not in your last search results. current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. Full text and rfc822 format available. Loaded symbols for ./libTest.so (gdb) info shared From To Syms Read Shared Object Library 0xb7fde820 0xb7ff6b9f Yes /lib/ld-linux.so.2 0xb7fc2a60 0xb7fc3a08 Yes /lib/i386-linux-gnu/libdl.so.2 0xb7e2ef10 0xb7f635cc Yes /lib/i386-linux-gnu/libc.so.6 0xb7fd83a0 0xb7fd84c8 Yes ./libTest.so Compatibility

Full text and rfc822 format available. in eval.c (gdb) list 36 in eval.c (gdb) cont About to calculate cosine of 2 -0.416147 Program exited normally. (gdb) quit ok.7.0 attachment For RedHat 7.0 the breakpoint in f_cos can more hot questions question feed default about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Now the error message changed from 127 to 12, i.e > > The specified module could not be found. > > I do not which other module it is searching. >

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed How to draw a path with coordinates defined by f(x) IQ Puzzle with no pattern How should I deal with a difficult group and a DM that doesn't help? We recently received a new plugin for which this approach does not work. This GDB was configured as "i386-redhat-linux". (gdb) file foo (gdb) set confirm off (gdb) set height 0 (gdb) break 26 Breakpoint 1 at 0x804889c: file foo.c, line 26. (gdb) run Breakpoint

wiki.strongswan.org/issues/538 –Pavel ┼áimerda Jan 4 '15 at 21:34 Also for me it was easiest to use one *.so per plugin, prefixed with the name of the project for which It also had a typo: used _r_dynamic instead of _r_debug, sorry about that. –Employed Russian Jan 6 '15 at 6:09 I was able to traverse the list of mapped What would be the atomic no. Read on... > Specifically I'd like to compile and link dso.c > into dso.so and then compile main.c and have it dynamically load > dso.so.

Status: CLOSED RAWHIDE Aliases: None Product: Red Hat Linux Classification: Retired Component: gdb (Show other bugs) Sub Component: --- Version: 7.1 Hardware: i386 Linux Priority medium Severity medium TargetMilestone: --- TargetRelease: Message #15 received at [email protected] (full text, mbox, reply): From: Laurent Carlier To: [email protected], Aurelien Jarno Subject: Re: Bug#496494: [libc6] gdb fail to debug with a dlopen() call Date: It plays especially well with autotools and running even from the development tree. confirm that returned handle is not NULL At that point, GDB should have loaded symbols for libtest.so, and libtest.so should show up in info shared GDB output.

ltrace that dlopen of the libconfig.so has been called twice with exactly the same arguments and the same path for libconfig.so –Basile Starynkevitch Jan 4 '15 at 19:37 As I see the following for > example (and it tells me that the loading was successful): > > 26 dll_handle = dlopen (dllname, RTLD_LAZY | RTLD_GLOBAL); > (gdb) n > 1a150000:d:\src\x11-stuff\dlopen-test\glide-0-0-0.dll GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. cov(x,y)=0 but corr(x,y)=1 more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture

In this case gdb switches the breakpoint addresses to 'pending' state and activates them when the library is loaded. Copy sent to GNU Libc Maintainers . But breakpoints in a library which is being debugged do not work. GDB will automatically read dso.so's symbols after the dlopen() call and then you'll be able to place breakpoints in your dynamically loaded library.

Your message did not contain a Subject field. Starting program: /tmp/a.out Temporary breakpoint 1, main () at t.c:1 1 int main() { return 0; } (gdb) p _r_debug $1 = 1 # The program does not reference _r_debug itself, Debian bug tracking system administrator . Starting program: /tmp/a.out Temporary breakpoint 1, main () at t2.c:3 3 int main() { return _r_debug.r_version; } (gdb) p _r_debug $1 = {r_version = 1, r_map = 0x7ffff7ffe1c8, r_brk = 140737351960640,

Here's a test run using your example: saguaro:dynlib$ /saguaro1/sourceware/bld-saguaro/gdb/gdb main GNU gdb 2001-08-21-cvs (MI_OUT) Copyright 2001 Free Software Foundation, Inc. I'm having a difficult time figuring out how to see the contents of _r_dynamic->r_map. This approach has worked successfully for several different plugins. A dynamic liabrary 'libtest.so' which is compiled by test.cpp with '-g'.

When I run strace on my program, I can see that the system is performing a search for libconfig.so as described in the dlopen man page. dso_init: initialized with 5 Breakpoint 3, dso_increment (i=2) at dso.c:19 19 value += i; (gdb) c Continuing. If symbols of the dynamic library are loaded by gdb but the library is not loaded yet, gdb failed to set a breakpoin correctly. This GDB was configured as "i386-redhat-linux". (gdb) file foo (gdb) set confirm off (gdb) set height 0 (gdb) break 26 Breakpoint 1 at 0x804889c: file foo.c, line 26. (gdb) run Breakpoint

On the other hand if you have a rogue dlclose somewhere, then just setting a breakpoint on dlclose should quickly lead you to the problem. Acknowledgement sent to Laurent Carlier : New Bug report received and forwarded. Type "show copying" to see the conditions. If GDB info shared still lists libconfig.so at step 3, then it's the former.

Reported by: Laurent Carlier Date: Mon, 25 Aug 2008 07:45:01 UTC Severity: normal Found in version glibc/2.7-13 Reply or subscribe to this bug. off In this mode GDB will not automatically load symbols for newly loaded shared libraries. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Not the answer you're looking for?

There is absolutely no warranty for GDB. Why do train companies require two hours to deliver your ticket to the machine? If I debug dynamic library breakpoints do not work. Full text and rfc822 format available.

The problem occur > > when trying to debug some gambas2 (in unstable) or gambas3 executable. > > Please try to install libc6-dbg to see if it helps. Hope this helps. > > The breakpoint is skipped and memory access errors are displayed. I modified the value of l_name for libconfig.so from path/libconfig.so to libconfig.so before loading libservices.so and the linker was able to find and load the library correctly. –Blake Nelson Jan 7 c++ c gdb dlopen share|improve this question asked Apr 4 '14 at 9:55 Wayne.liu 5618 thanks to reply me , -d just to point the directory gdb search for.