Re: Mingw, haning of apps, databasin

[Fred Kiefer]

On 23.08.2011 15:05, Riccardo Mottola wrote:
> when running DataBasin, with operation that used to work on mingw and
> still work on other systems, I notice:
>
> warning: 2011-08-23 12:43:12.286 DataBasin[4124] could not convert to
> UTF8 string! bytes=0x1b8f8e0 len=19
>
> warning: 2011-08-23 12:43:12.286 DataBasin[4124] could not convert to
> UTF8 string! bytes=0x1b8f8f3 len=1
>
> warning: 2011-08-23 12:43:12.286 DataBasin[4124] could not convert to
> UTF8 string! bytes=0x1b8f909 len=19
>
> warning: 2011-08-23 12:43:12.286 DataBasin[4124] could not convert to
> UTF8 string! bytes=0x1b8f91c len=1

These messaged come from the NSXMLParser when it is trying to build an 
NSString from parsed data. You need to put a break point into the local 
function NewUTF8STR to find out what is going on, and as this is an 
inline function you may have to remove the inline first.

> For the same data, I get no errors on other systems.
>
> These messages are always printed, so they do not determine the crash,
> but they are suspicious in any case.
>
> Further in the flow the application saves data to a file in a specified
> encoding, user-selectable. UTF-8, Latin1 and windows cp 1251 are among
> the choices.
>
> On NetBSD all encodings do work, on windows, ironically right with the
> windows CP-1251 the application hangs, with utf-8 it works! (But no
> additional warnings are printed out).

We do this conversion via iconv, most likely this isn't working on MinGW 
for some reason. Please check your config.log file in base to see 
whether a problem gets reported for iconv.
Looks like we need a few more string conversion tests.

> I run the app in GDB, to check where it hangs, but hitting "ctrl-c"
> kills the whole debugger+process and drops me to the shell.

This always annoys me on MinGW.