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[jbaron@redhat.com: [PATCH 0/3] tracepoints: delay argument evaluation]
- From: Jason Baron <jbaron at redhat dot com>
- To: gcc at gcc dot gnu dot org
- Date: Wed, 20 May 2009 09:56:31 -0400
- Subject: [jbaron@redhat.com: [PATCH 0/3] tracepoints: delay argument evaluation]
hi,
While working on some Linux kernel code, I've found that functions that
are declared as 'static inline' are having their arguments evaluated
well before they are used. For example I have a function:
static inline void trace(arg1, arg2)
{
if (unlikely(enabled)) {
<use the arguments>
}
}
If i call 'trace(ptr->arg1, ptr->arg2)', then the pointers are
dereferenced before the 'if' is executed. Is there any way to delay the
argument evaluation until they are used? Am I missing a compiler option?
I am used gcc 4.3.0.
thanks,
-Jason