On Thursday 11 of December 2014 09:35:00 Pavel Raiskup wrote:
> Thanks for the report, however this is not reproducible on my GNU/Linux box.
Yes, I'm aware this does not happen on x86 platforms, but I've seen it on
Solaris SPARC and on HP-UX IA64.
> Would you be able to use the debugger and see, where the problem actually is?
>
> You could start at 'read_and' function and than step over 'decode_header' and
> see why the process skips 'do_something()' call.
Yes, I did a bit of debugging and spotted the issue. The problem is in the
ISFOUND macro, defined in common.h .
The macro is defined like this:
#define ISFOUND(c) ((occurrence_option == 0) ? (c)->found_count : \
(c)->found_count == occurrence_option)
The problem is, on my compiler, if I do something like:
bool is_found = ISFOUND (cursor);
the compiler downgrades cursor->found_count to a bool type (8 bit), so if
cursor->found_count is a multiple of 256 then ISFOUND returns 0.
I modified the macro this way:
#define ISFOUND(c) ((occurrence_option == 0) ? (c)->found_count > 0 : \
(c)->found_count == occurrence_option)
and the behaviour is now correct for me.
Also, the WASFOUND macro in the same file has a similar issue.
Regards,
Romano
