| From: | Oliver Roberts |
| Date: | 12 Jul 2000 at 16:13:30 |
| Subject: | Re: ExamineFH() Problems |
On 12-Jul-00 15:55:39 BST, Jacob Laursen wrote:
> On 12-Jul-00 Nick Lamburn wrote:
>> I am currently writing a routine to read a file (currently fixed to
>> s:shell-startup just for testing purposes) and get its size so that I
>> can allocate a buffer to hold this text in.
>>
>> Now, I understand you have to use ExamineFH() from the dos.library; and
>> indeed it works - except that when i click on to my program's window or
>> anywhere else for that matter - the computer completely freezes up
>> requiring a reboot.
> You need to allocate memory for your FileInfoBlock. Right now your code
> will trash memory.
BTW, this can be done with AllocDosObject() - e.g.
file_info = AllocDosObject(DOS_FIB,NULL);
This will also ensure that the memory is aligned correctly.
Alternatively, I know that DICE (and I presume SAS/C does too) supports
the __aligned attribute, which you could use instead - e.g.
__aligned struct FileInfoBlock file_info; // note, this isn't a pointer
And use ExamineFH(fh,&file_info).
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