i tried llvm-3.4 on Ubuntu 13.10-64bit, and have this issue: - immediately after lldb shows the prompt (lldb), i entered "b main" - then to see the list of breakpoints, i entered "br l". this command shows 1 breakpoint (this is expected), but doesnt return to the prompt after that.
i installed lldb-3.5 from llvm.org/apt/, and this problem was fixed. is there any chance to have lldb-3.5 with upcoming Ubuntu 14.04 to replace lldb-3.4, which is so buggy that it is unusable even for basic usage? thanks, Jun On Sat, Feb 1, 2014 at 2:33 AM, Todd Fiala <[email protected]> wrote: > Just for posterity's sake, I did run the hello world test on Ubuntu 13.10 > (x86_64 - so not 32-bit), top of tree lldb, and it did work. I know this > isn't the 32-bit case, I just wanted to show it working on Ubuntu 13.10 in > 64-bit mode. Same hello.c as before, this time with gcc 4.8.1 as > distributed with Ubuntu 13.10: > > # create a.out > tfiala@ubuntu:~/work/samples/hello$ gcc -g -O0 hello.c > # run my top of tree lldb that I just built from lldb as of svn r200548. > tfiala@ubuntu:~/work/samples/hello$ > ~/work/lgs/build/Debug+Asserts/bin/lldb > (lldb) target create a.out > Current executable set to 'a.out' (x86_64). > (lldb) b main > Breakpoint 1: where = a.out`main + 15 at hello.c:5, address = > 0x000000000040053c > (lldb) run > Process 11621 launching > Process 11621 stopped > * thread #1: tid = 11621, 0x00007f428f3a7630, name = 'a.out', stop reason > = trace > frame #0: 0x00007f428f3a7630 > -> 0x7f428f3a7630: movq %rsp, %rdi > 0x7f428f3a7633: callq 0x7f428f3aafa0 > 0x7f428f3a7638: movq %rax, %r12 > 0x7f428f3a763b: movl 0x2216ef(%rip), %eax > (lldb) Process 11621 launched: '/home/tfiala/work/samples/hello/a.out' > (x86_64) > Process 11621 stopped > (lldb) * thread #1: tid = 11621, 0x000000000040053c a.out`main(argc=1, > argv=0x00007fff68b12a38) + 15 at hello.c:5, name = 'a.out', stop reason = > breakpoint 1.1 > frame #0: 0x000000000040053c a.out`main(argc=1, > argv=0x00007fff68b12a38) + 15 at hello.c:5 > 2 > 3 int main(int argc, char **argv) > 4 { > -> 5 printf("Hello, world\n"); > 6 return 0; > 7 } > (lldb) > > I did assign myself the 32-bit Ubuntu 13.10 issue for gcc-built lldb. > I'll have a look at that: > http://llvm.org/bugs/show_bug.cgi?id=17802 > > > On Fri, Jan 31, 2014 at 8:56 AM, Jun Koi <[email protected]> wrote: > >> >> >> >> On Sat, Feb 1, 2014 at 12:53 AM, Todd Fiala <[email protected]> wrote: >> >>> Very helpful, thanks Andrew. >>> >>> Jun - seems much more likely this is related to the 32-bit rather than >>> the Ubuntu 13.10 part. (I am still building the latest lldb on Ubuntu >>> 13.10 right now, but it is a 64-bit version). >>> >>> I'll eventually need 32-bit working on Ubuntu if lldb goes into the >>> Android AOSP tree and if we still use 32-bit host tools, so I'll have a >>> look at what's up with that. >>> >>> Any chance you can move to 64 bit in the meantime, Jun? >>> >> >> yes i can if there is no alternative, but i would not want to do that if >> 32bit works for me. >> >> so please support 32bit lldb, as it is still the main environment for >> lots of people. >> >> >> thanks, >> Jun >> >> >> >>> >>> >>> On Fri, Jan 31, 2014 at 8:46 AM, Andrew MacPherson < >>> [email protected]> wrote: >>> >>>> Hi guys, >>>> >>>> I notice that Jun is on 32-bit and I can also confirm that I haven't >>>> found it possible to get lldb working under 32-bit Linux. LLDB can't >>>> currently be compiled with clang right now due to this issue: >>>> >>>> http://llvm.org/bugs/show_bug.cgi?id=18311 >>>> >>>> And compiling with gcc (4.8.1 in my case) results in this assertion >>>> failure when trying to debug anything: >>>> >>>> http://llvm.org/bugs/show_bug.cgi?id=17802 >>>> >>>> Hope that helps, >>>> Andrew >>>> >>>> >>>> >>>> On Fri, Jan 31, 2014 at 5:30 PM, Todd Fiala <[email protected]> wrote: >>>> >>>>> Here's what I'm seeing on Ubuntu 12.04 x86_64 (I'll hop over to Ubuntu >>>>> 13.10 in a moment to see what it shows), using gcc 4.8.2: >>>>> >>>>> Here is my hello.c: >>>>> >>>>> #include <stdio.h> >>>>> >>>>> int main(int argc, char **argv) >>>>> { >>>>> printf("Hello, world\n"); >>>>> return 0; >>>>> } >>>>> >>>>> Here is the output from compiling and running lldb: >>>>> >>>>> tfiala@tfiala2:~/lldb/samples/hello$ gcc -g -O0 -o hello hello.c >>>>> tfiala@tfiala2:~/lldb/samples/hello$ ./hello >>>>> Hello, world >>>>> # the following is my top of tree build from lldb as of about 12 hours >>>>> ago >>>>> tfiala@tfiala2:~/lldb/samples/hello$ >>>>> ~/lldb/svn/lgs/build2/Debug+Asserts/bin/lldb >>>>> (lldb) target create ./hello >>>>> Current executable set to './hello' (x86_64). >>>>> (lldb) b main >>>>> Breakpoint 1: where = hello`main + 15 at hello.c:5, address = >>>>> 0x00000000004004df >>>>> (lldb) r >>>>> Process 11433 launching >>>>> Process 11433 stopped >>>>> * thread #1: tid = 11433, 0x00007faad38206b0, name = 'hello', stop >>>>> reason = trace >>>>> frame #0: 0x00007faad38206b0 >>>>> -> 0x7faad38206b0: movq %rsp, %rdi >>>>> 0x7faad38206b3: callq 0x7faad3824010 >>>>> 0x7faad38206b8: movq %rax, %r12 >>>>> 0x7faad38206bb: movl 0x2215ff(%rip), %eax >>>>> (lldb) Process 11433 launched: './hello' (x86_64) >>>>> Process 11433 stopped >>>>> * thread #1: tid = 11433, 0x00000000004004df hello`main(argc=1, >>>>> argv=0x00007fffa93f3ba8) + 15 at hello.c:5, name = 'hello', stop reason = >>>>> breakpoint 1.1 >>>>> frame #0: 0x00000000004004df hello`main(argc=1, >>>>> argv=0x00007fffa93f3ba8) + 15 at hello.c:5 >>>>> 2 >>>>> 3 int main(int argc, char **argv) >>>>> 4 { >>>>> -> 5 printf("Hello, world\n"); >>>>> 6 return 0; >>>>> 7 } >>>>> (lldb) >>>>> >>>>> I'll try it on Ubuntu 13.10 x86_64 next. That one will be with a >>>>> stock system + packages for build-essential, libedit-dev, libpython-dev >>>>> and >>>>> swig (I think that's it). >>>>> >>>>> -Todd >>>>> >>>>> >>>>> On Fri, Jan 31, 2014 at 8:23 AM, Jun Koi <[email protected]> wrote: >>>>> >>>>>> >>>>>> >>>>>> >>>>>> On Sat, Feb 1, 2014 at 12:19 AM, Todd Fiala <[email protected]>wrote: >>>>>> >>>>>>> Hi Jun, >>>>>>> >>>>>>> Thanks again for the report. >>>>>>> >>>>>>> I'm hopping over to Ubuntu 13.10 and will have a look at this. It >>>>>>> would definitely be helpful to know a few things (which I'm going to >>>>>>> have >>>>>>> to guess about here): >>>>>>> * What compiler are you using? gcc or clang? >>>>>>> >>>>>> >>>>>> i am using default CC, which is gcc >>>>>> >>>>>> >>>>>>> * What flags did you pass to the compiler when you compiled? Was it >>>>>>> a debug build? Was it optimized? >>>>>>> >>>>>>> >>>>>> it is also default compiler option. for example, with helloworld.c >>>>>> program, i simply compiled it with (without Makefile): >>>>>> >>>>>> $ make helloworld >>>>>> >>>>>> >>>>>> >>>>>>> I'll file a bug if I'm able to cause a seg fault. Yesterday I had a >>>>>>> check-in that fixed a seg fault under Linux - not sure if that's >>>>>>> something >>>>>>> you were hitting. >>>>>>> >>>>>>> >>>>>> I'll post what I see. >>>>>>> >>>>>>> >>>>>> awesome, please keep us updating! >>>>>> >>>>>> thanks, >>>>>> Jun >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> On Thu, Jan 30, 2014 at 7:00 AM, Jun Koi <[email protected]>wrote: >>>>>> >>>>>>> hi, >>>>>>> >>>>>>> i got lldb 3.5 from llvm.org/apt, and it is a bit better: it no >>>>>>> longer has issue with libedit, it seems. >>>>>>> >>>>>>> however, it crashes all the time. you can easily reproduce it like >>>>>>> below: >>>>>>> >>>>>>> $ lldb-3.5 ./test >>>>>>> Current executable set to './test' (i386). >>>>>>> (lldb) b main >>>>>>> Breakpoint 1: where = test`main, address = 0x0804847d >>>>>>> (lldb) r >>>>>>> Segmentation fault (core dumped) >>>>>>> >>>>>>> >>>>>>> "test" can be any program. in my case, it is just a "hello world" >>>>>>> program, written in C. >>>>>>> >>>>>>> again, this is on Ubuntu 13.10 32bit. please try it, and confirm >>>>>>> this is indeed a bug. >>>>>>> >>>>>>> at this current status, lldb is really unusable :-(( >>>>>>> >>>>>>> thanks. >>>>>>> Jun >>>>>>> >>>>>>> >>>>>>> >>>>>>> On Thu, Jan 30, 2014 at 2:06 AM, Todd Fiala <[email protected]>wrote: >>>>>>> >>>>>>>> Hi Jun, >>>>>>>> >>>>>>>> Could you file a bug >>>>>>>> here<http://llvm.org/bugs/enter_bug.cgi?product=lldb>and attach your >>>>>>>> source? Include how you compile it so we make sure we're >>>>>>>> all on the same page to reproduce it. Then we can see what's going on. >>>>>>>> >>>>>>>> Thanks for reporting it! >>>>>>>> >>>>>>>> Sincerely, >>>>>>>> Todd Fiala >>>>>>>> >>>>>>>> >>>>>>>> On Wed, Jan 29, 2014 at 6:48 PM, Sylvestre Ledru < >>>>>>>> [email protected]> wrote: >>>>>>>> >>>>>>>>> On 29/01/2014 09:42, Greg Clayton wrote: >>>>>>>>> > You will need to update the installed libedit on your machine. >>>>>>>>> "libedit" is the line reader program we use to get commands and the >>>>>>>>> default >>>>>>>>> version on most linux's is quite old and out of date. >>>>>>>>> > >>>>>>>>> > >>>>>>>>> Ubuntu saucy (13.10) has libedit v3.1-20130712. Not sure it is the >>>>>>>>> issue here... >>>>>>>>> >>>>>>>>> Sylvestre >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> lldb-dev mailing list >>>>>>>>> [email protected] >>>>>>>>> http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> Todd Fiala | Software Engineer | [email protected] | >>>>>>>> 650-943-3180 >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> lldb-dev mailing list >>>>>>>> [email protected] >>>>>>>> http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Todd Fiala | Software Engineer | [email protected] | 650-943-3180 >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> Todd Fiala | Software Engineer | [email protected] | 650-943-3180 >>>>> >>>>> _______________________________________________ >>>>> lldb-dev mailing list >>>>> [email protected] >>>>> http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev >>>>> >>>>> >>>> >>> >>> >>> -- >>> Todd Fiala | Software Engineer | [email protected] | 650-943-3180 >>> >> >> > > > -- > Todd Fiala | Software Engineer | [email protected] | 650-943-3180 >
_______________________________________________ lldb-dev mailing list [email protected] http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev
