jung-kurt / luahpdf Goto Github PK

The wrapper for Font_TextWidth in luahpdf 1.0 creates a Lua table to pass back 
the contents of the returned HDF_TextWidth struct, but populates all four table 
fields (numchars, numwords, width, numspace) from the numchars field of the 
struct.

Very simple to patch, attached.

What steps will reproduce the problem?
1. install luahpdf systemwide
2. change working directory to source tree
3. chmod -x demo/
4. cd demo
5. lua font_demo.lua

Program exit with error 1, it should give a warning about not having write 
permission and exit gracefully.
Actual output is:
{{{
lua: HPDF error 0x1017, detail 13
stack traceback:
    [C]: in function 'SaveToFile'
    font_demo.lua:93: in main chunk
    [C]: ?
}}}

I'm on OS X 10.7 using luahpdf 1.1 with libharu 2.2.1 and lua 5.1.4, all 
installed with MacPorts.

What steps will reproduce the problem?
2. start the Lua interpreter
2. load built hpdf.so
3. quit the Lua interpreter (ctrl-D)

What is the expected output? What do you see instead?
Nothing. An error about freeing a non allocated pointer.

What version of the product are you using? On what operating system?
1.0 on OS X 10.6.5

Please provide any additional information below.

Here's full output:
$ lua
Lua 5.1.4  Copyright (C) 1994-2008 Lua.org, PUC-Rio
> print(package.cpath)
./?.so;/opt/local/lib/lua/5.1/?.so;/opt/local/lib/lua/5.1/loadall.so
> require'hpdf'
> print(hpdf.VERSION_TEXT)
2.2.0
> 
lua(86919) malloc: *** error for object 0x100232520: pointer being freed was 
not allocated
*** set a breakpoint in malloc_error_break to debug
Abort trap
$