Re: [PATCH] Fix immediate asm constraint for gcc 3 x86_64
- From: "H. Peter Anvin" <hpa@xxxxxxxxx>
- Date: Fri, 16 May 2008 14:32:21 -0700
Mathieu Desnoyers wrote:
It seems that include/asm-x86/immediate.h in sched-devel.git causes
this. gcc-3.4 does not seem to like the "i" (&name##__imv) constraint. I
have seen no such problem with gcc-4.1. This is weird. It seems that
relaxing the constraint helps fixing this, but it's not clear whether
fixing the code or gcc-3.4 is the correct solution... here is the fix :
Fix immediate asm constraint for gcc 3 x86_64
It might make it compile, but it's completely *wrong* for the purpose intended.
It permits gcc to present the address in a register, for example, so there is no guarantee that you end up with an immediate.
-hpa
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