OpenEuphoria

[bug] win32lib in world distance calculator

• Posted by Jason Gade <jaygade at yahoo.com> May 05, 2005
• 428 views

I had a bug in win32file.ew (of win32lib) when running Greg Habarek's World
Distance Calculator.  The main wd_calc.exw program tacks a ';' on the end of the
PATH variable in lines 22-24.  This causes win32file.ew to add an empty sequence
to the end of vSearchPaths, causing setSearchPaths() function to fail with a
subscript 0 out of bounds reading from a sequence length 0 error.  It is in the
loop where setSearchPaths() is adding a trailing backslash to each entry in
vSearchPaths.

Using the "short" version of win32lib 0.60.6

for i=1 to length(vSearchPaths)do
    if vSearchPaths[i][length(vSearchPaths[i])]!='\\' then -- error
        vSearchPaths[i]&='\\'
    end if
end for

Maybe change the line above to 

if length(vSearchPaths[i]) and
    vSearchPaths[i][length(vSearchPaths[i])]!='\\' then

Or have it eliminate empty entries earlier when it is parsing the path. 
Anyone's path could have an empty ';' in the middle or the end causing this
error.

=====================================
World distance calculator is pretty cool, but it took me some time to get it to
work.

Maybe a readme file that mentions that it requires xControls, strtok, and the
zip code database downloaded separately.


=====================================
Too many freaks, not enough circuses.

j.