Am 21.09.2015 um 23:29 schrieb Jan Kandziora:
>
> Fortunately, I can narrow these crashes down to undefined behaviour
>
> * when a property in the config file is of for example "u" type
> * and the script called does not return any data, or something which
> cannot be parsed as configured.
>
> One could argue "okay, it's configured as unsigned so it should always
> return an unsigned integer" but calling the script may fail for some
> reason and the last thing we want in this case is having owserver crash.
>
>
> I'm currently thinking how to fix this.
>
Paul, you have to help me here. For some odd reason FS_r_external() is
not allowed to fail.
If I change module/owlib/src/c/ow_read_external.c:52 into
return 0 ;
all is okay. If I place "return -ENOENT ;" there, I get the owserver
crash always when accessing an external node. Same as with the original
"return zoe ;" when the node returns -EINVAL. The problem is connected
to the error condition, not to the bad data.
Kind regards
Jan
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