[klibc] [klibc:master] arm/setjmp.S: fix longjmp

[H. Peter Anvin]

On 07/01/2012 01:57 PM, klibc-bot for Steve McIntyre wrote:
> Commit-ID:  d7d16afbdae9bdea83aeb26ac572e6fc4d7d4940
> Gitweb:     http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=d7d16afbdae9bdea83aeb26ac572e6fc4d7d4940
> Author:     Steve McIntyre <steve at einval.com>
> AuthorDate: Fri, 29 Jun 2012 18:13:34 +0100
> Committer:  maximilian attems <max at stro.at>
> CommitDate: Sun, 1 Jul 2012 22:51:00 +0200
>
> [klibc] arm/setjmp.S: fix longjmp
>
> There's a real bug in the ARM assembly version of longjmp in
> usr/klibc/arch/arm/setjmp.S: it will always pass back its first
> argument as a return value, even if it's 0 (see the man page for
> more details). Oddly, the Thumb implementation in the same file
> *is* correct!
>

klibc explicitly considers longjmp(..., 0) to be user error; see the 
README file.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.