Subject: Re: Make assembler warnings fatal?
To: Simon Burge <>
From: Richard Earnshaw <>
List: tech-kern
Date: 02/26/2005 13:48:09
On Sun, 27 Feb 2005 00:39:18 +1100, Simon Burge wrote:
> What do folks think of making assembler warnings fatal?  On mips at
> least we've hit a few new warnings that appeared with binutils 2.15 and
> have been fixed, but these would have been caught much easier if we
> enabled the --fatal-warnings flag to the assembler.
> Just adding -Wa,--fatal-warnings to AFLAGS in didn't help.
> Adding that to AFLAGS in sys/conf/conf/ works, but this
> probably doesn't catch LKMs etc?  Where would be the best place to add
> this?  Also, it probably should be enabled for userland assembly code
> too.
> Any arguments against not enabling --fatal-warnings ?

Does that apply to assembly warnings from .c files, or only from .S/.s?

If the former, then it will break ARM ports where an inline ASM generates 
such a warning (though it happens to be safe).