On Thursday 12 July 2007 19:16:20 Maciej W. Rozycki wrote:

On Thu, 12 Jul 2007, Andy Whitcroft wrote:

[snip]

quoted

WARNING: declaring multiple variables together should be avoided
#372: FILE: drivers/serial/sb1250-duart.c:246:
+	unsigned int mctrl, status;

 Well, this is probably superfluous -- why would anyone prefer:

	int r0;
	int r1;
	int r2;
	int r3;
	int r4;

to:

	int r0, r1, r2, r3, r4;

unconditionally?

Imagine you're working on a piece of kernel code that has a lot of parallel 
churn. Conflicts on lines like "int a,b,c,d;" are more likely to cause Andrew 
et al pain, which I guess is the rationale for discouraging it. Conversely, 
if the variables are kept separate, diff handles it fine.

I think as long as the variables are logically grouped, the pain is minimised, 
but there's a few good reasons for the verbose style.

-- 
Cheers,
Alistair.

137/1 Warrender Park Road, Edinburgh, UK.