[Bug-plotutils] [Mayhem] hersheydemo crashes

[Andreas Metzler]

Hello,

with empty $DISPLAY "hersheydemo --outpu=X" crashes:
(gdb) run --outpu=X
Starting program: /usr/bin/hersheydemo --outpu=X
libplot error: the Plotter could not be opened, as the DISPLAY parameter is null

Program received signal SIGSEGV, Segmentation fault.
XAllocColor (dpy=0x0, cmap=0, address@hidden)
    at ../../src/GetHColor.c:40
40      ../../src/GetHColor.c: No such file or directory.
(gdb) bt full
#0  XAllocColor (dpy=0x0, cmap=0, address@hidden)
    at ../../src/GetHColor.c:40
        status = <optimized out>
        rep = {type = 128 '\200', pad1 = 225 '\341', sequenceNumber = 65535,
          length = 32767, red = 0, green = 0, blue = 0, pad2 = 0, pixel = 0,
          pad3 = 0, pad4 = 65535, pad5 = 0}
        req = <optimized out>
#1  0x00007ffff7b17657 in _pl_x_retrieve_color (
    address@hidden, address@hidden)
    at x_color.c:256
        cptr = <optimized out>
        rgb_red = 65535
        rgb_green = 65535
        rgb_blue = 65535
        xretval = <optimized out>
#2  0x00007ffff7b17bd8 in _pl_x_set_bg_color (address@hidden)
    at x_color.c:125
        old = <optimized out>
        new1 = {red = 65535, green = 65535, blue = 65535}
        rgb = {pixel = 6324544, red = 65535, green = 65535, blue = 65535,
          flags = 0 '\000', pad = 0 '\000'}
#3  0x00007ffff7b1d486 in _pl_y_erase_page (_plotter=0x605150) at y_erase.c:48
        head_found = <optimized out>
-------------------------------------

More details here: <https://bugs.debian.org/716545>

cu Andreas

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