Attachment 15266 Details for Bug 31121 – Example of a gdb session with bin2SD

Example of a gdb session with bin2SD

bin2SD_gdb_session.txt (text/plain), 3.97 KB, created by Robert Jenssen on 2023-12-19 07:08:43 UTC

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Creator: Robert Jenssen

Created: 2023-12-19 07:08:43 UTC

Size: 3.97 KB

patch

obsolete

>$ make src/bin2SD.oct
>/usr/local/octave-9.0.0/bin/mkoctfile -v -o src/bin2SD.oct -Wall -lgmp -lmpfr  src/bin2SD.cc
>g++ -c  -fPIC -I/usr/local/octave-9.0.0/include/octave-9.0.0/octave/.. -I/usr/local/octave-9.0.0/include/octave-9.0.0/octave -I/usr/local/octave-9.0.0/include  -pthread -fopenmp -m64 -march=nehalem -Og -gdwarf-5 -std=c++17 -I/usr/local/octave-9.0.0/include  -Wall   src/bin2SD.cc -o /tmp/oct-J8dsQ8.o
>g++ -I/usr/local/octave-9.0.0/include/octave-9.0.0/octave/.. -I/usr/local/octave-9.0.0/include/octave-9.0.0/octave -I/usr/local/octave-9.0.0/include  -pthread -fopenmp -m64 -march=nehalem -Og -gdwarf-5 -std=c++17 -I/usr/local/octave-9.0.0/include  -Wall -o src/bin2SD.oct  /tmp/oct-J8dsQ8.o   -lgmp -lmpfr -shared -Wl,-Bsymbolic  -L/usr/local/octave-9.0.0/lib -shared -Wl,-Bsymbolic  -L/usr/local/octave-9.0.0/lib 
>$ gdb /usr/local/octave-9.0.0/bin/octave
>GNU gdb (Fedora Linux) 14.1-1.fc39
>Copyright (C) 2023 Free Software Foundation, Inc.
>License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>This is free software: you are free to change and redistribute it.
>There is NO WARRANTY, to the extent permitted by law.
>Type "show copying" and "show warranty" for details.
>This GDB was configured as "x86_64-redhat-linux-gnu".
>Type "show configuration" for configuration details.
>For bug reporting instructions, please see:
><https://www.gnu.org/software/gdb/bugs/>.
>Find the GDB manual and other documentation resources online at:
>    <http://www.gnu.org/software/gdb/documentation/>.
>
>For help, type "help".
>Type "apropos word" to search for commands related to "word"...
>Reading symbols from /usr/local/octave-9.0.0/bin/octave...
>(gdb)  set args --no-gui -p src -p src/test src/test/bin2SD_test.m
>(gdb) b Fbin2SD
>Function "Fbin2SD" not defined.
>Make breakpoint pending on future shared library load? (y or [n]) y
>Breakpoint 1 (Fbin2SD) pending.
>(gdb) r
>Starting program: /usr/local/octave-9.0.0/bin/octave --no-gui -p src -p src/test src/test/bin2SD_test.m
>[Thread debugging using libthread_db enabled]
>Using host libthread_db library "/lib64/libthread_db.so.1".
>process 11590 is executing new program: /usr/local/octave-9.0.0/libexec/octave/9.0.0/exec/x86_64-pc-linux-gnu/octave-gui
>Missing separate debuginfo for /lib64/libqscintilla2_qt6.so.15.
>The debuginfo package for this file is probably broken.
>[Thread debugging using libthread_db enabled]
>Using host libthread_db library "/lib64/libthread_db.so.1".
>Missing separate debuginfo for /lib64/libEGL.so.1.
>The debuginfo package for this file is probably broken.
>[New Thread 0x7fffe0b446c0 (LWP 11593)]
>[New Thread 0x7fffdbfff6c0 (LWP 11594)]
>[New Thread 0x7fffdaa5b6c0 (LWP 11595)]
>[New Thread 0x7fffda25a6c0 (LWP 11596)]
>[New Thread 0x7fffd9a596c0 (LWP 11597)]
>[New Thread 0x7fffd91f66c0 (LWP 11598)]
>[Thread 0x7fffd91f66c0 (LWP 11598) exited]
>[New Thread 0x7fffd91f66c0 (LWP 11599)]
>[New Thread 0x7fffd886b6c0 (LWP 11600)]
>[Thread 0x7fffd91f66c0 (LWP 11599) exited]
>[New Thread 0x7fffd91f66c0 (LWP 11601)]
>[Thread 0x7fffd886b6c0 (LWP 11600) exited]
>[New Thread 0x7fffc3e8b6c0 (LWP 11602)]
>[Thread 0x7fffd91f66c0 (LWP 11601) exited]
>[Thread 0x7fffc3e8b6c0 (LWP 11602) exited]
>[New Thread 0x7fffc3e8b6c0 (LWP 11603)]
>[New Thread 0x7fffd91f66c0 (LWP 11604)]
>
>Using bin2SD octfile
>[Switching to Thread 0x7fffc3e8b6c0 (LWP 11603)]
>
>Thread 12 "QThread" hit Breakpoint 1, Fbin2SD (args=..., nargout=1)
>    at src/bin2SD.cc:35
>35	{
>(gdb) l
>30	
>31	#include <octave/oct.h>
>32	#include <octave/parse.h>
>33	
>34	DEFUN_DLD(bin2SD, args, nargout, "y=bin2SD(x,nbits,ndigits)")
>35	{
>36	  if (args.length() != 3)
>37	    {
>38	      print_usage();
>39	      return octave_value_list();
>(gdb) n
>36	  if (args.length() != 3)
>(gdb) 
>45	  if (bit_max_init_done==false)
>(gdb) 
>47	      octave_value_list flintmax_retval = octave::feval("flintmax");
>(gdb) 
>
>48	      double bit_max = flintmax_retval(0).double_value(true);
>(gdb) 
>49	      max_nbits = floor(log2(bit_max)-2);
>(gdb) 
>50	      bit_max_init_done=true;
>(gdb) 
>51	    }
>(gdb) 
>54	  const int64_t nbits = args(1).int64_value(true);
>(gdb) 
>

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