Re: log of negative X handling

[Dmitri A. S. <das...@gm...>]

On Dec 17, 2007 2:28 PM, Ethan Merritt <merritt@u.washington.edu> wrote:

> gdb ./gnuplot
> (gdb) run

I got a lot of:

warning: Missing the separate debug info file:
/usr/lib/debug/.build-id/8c/3175d059ab1811458bed492625917b85f05d93.debug

not quite sure what does it mean...

> Terminal type set to 'wxt'
> gnuplot> set log x
> gnuplot> plot sin(x)
>          x range must be greater than 0 for log scale
> gnuplot>
>          # no problem on my machine, but if it segfaults here, then type:
> (gdb) where
>

Terminal type set to 'wxt'
gnuplot> set log x
gnuplot> plot sin(x)
         x range must be greater than 0 for log scale[New Thread
46912527115504 (LWP 4915)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 46912527115504 (LWP 4915)]
0x0000003d162795a0 in strlen () from /lib64/libc.so.6
(gdb) where
#0  0x0000003d162795a0 in strlen () from /lib64/libc.so.6
#1  0x0000003d16246c3c in vfprintf () from /lib64/libc.so.6
#2  0x0000003d1626a10a in vsnprintf () from /lib64/libc.so.6
#3  0x00000000004c50b7 in int_error (t_num=-1,
    str=0x4dfa38 "%s range must be greater than 0 for log scale") at util.c:932
#4  0x00000000004145c7 in axis_unlog_interval (axis=FIRST_X_AXIS,
    min=0x7fffcc06f378, max=0x7fffcc06f370, checkrange=7) at axis.c:181
#5  0x0000000000460db4 in plotrequest () at plot2d.c:2132
#6  0x000000000041d5bc in do_line () at command.c:546
#7  0x000000000041dbb9 in com_line () at command.c:336
#8  0x000000000045aa7e in main (argc=1, argv=0x7fffcc06f688) at plot.c:681
(gdb)


Hope it helps.

> --
> Ethan A Merritt
>

Sincerely,

Dmitri.
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