Hi,

Carlo Wood reported in Debian bug http://bugs.debian.org/484995:
"""
While running the command doxygen for my project,
which somewhere runs 'dot graph_legend.dot -Tpng:gd -o
graph_legend.png', dot prints:
Pango-WARNING **: Error loading GPOS table 5503

This occurs because in line
pango1.0-1.20.2/pango/opentype/harfbuzz-gpos.c:664,
error is set to HB_Err_Invalid_SubTable_Format:

663	  default:
664	    return ERR(HB_Err_Invalid_SubTable_Format);

This is a switch for the variable an->PosFormat in line 575:

575	  switch ( an->PosFormat )

an->PosFormat has value 56 at that moment, and was read just
before on line 571:

571	  an->PosFormat = GET_UShort();

GET_UShort is a macro that depends on stream->cursor

stream is at the point:

(gdb) p *stream
$112 = {base = 0x2b7330d17000 "", size = 465256, pos = 454286,
descriptor = {value = 47773740265472, pointer = 0x2b7330d17000},
pathname = {value = 6732768, pointer = 0x66bbe0}, read = 0,
close = 0x2b732ee23b90, memory = 0x62b960, cursor = 0x2b7330d85e8e "",
limit = 0x2b7330d85e8e ""}

The file associated with this stream is:

(gdb) p *((char(*)[60])stream.pathname.pointer)
$77 = "/usr/share/fonts/truetype/freefont/FreeSans.ttf\000\000\000\000\000\000\000\000\000q\000\000"

> dpkg -S /usr/share/fonts/truetype/freefont/FreeSans.ttf
ttf-freefont: /usr/share/fonts/truetype/freefont/FreeSans.ttf
>dpkg -l ttf-freefont
+++-==============-==============-============================================
ii  ttf-freefont   20080323-3     Freefont Serif, Sans and Mono Truetype fonts
>md5sum /usr/share/fonts/truetype/freefont/FreeSans.ttf
903788b0c6066dc3341fcb8bdd492ddc /usr/share/fonts/truetype/freefont/FreeSans.ttf

Backtrace at the moment that the error occurs:
(gdb) bt

+ Trace 201602

Let me know if I should for additional information.  I'll ask whether he can reproduce with pango-view directly.

Bye,