[ok] code question

[stefbuet]

Hi,

I'm using some zip functionalities from an external source code I didn't write.
I've some warning compiling it with gcc and I would like to avoid those, but I'm not sure about it.

I have multiple warning like that : [Warning] statement has no effect.
I don't understand what the corresponding lines are doing... looks like a macro but...

[Warning] statement has no effect.
lines : 746, 757, 851, 860, 872, 1009, 1077, [...]. (from cpp file)

Code here :
http://pastebin.com/zQ3QwVV4
header : http://pastebin.com/rNThEDyF

Thanks for your help.

[Sylence]

The first two warnings are coming from this macro:

Code: Select all

#define LOADOUT {q=s->write;m=(uInt)WAVAIL;m;}

I don't see any sense in the last statement (m;) and so does your compiler

That's the reason why macro functions are evil

[stefbuet]

Thanks.
Yeah this is strange there were 3 useless instructions like that...
I'm wondering why. The author of this code is not a newbie.

[hendu]

Workarounds for crappy compilers. Also macros are evil.