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util: Fix MIN_NON_ZERO 

MIN_NON_ZERO(1, 0) is evaluated to 0. Rewrite the macro to fix it.

Reported-by: Miroslav Rezanina <mrezanin@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1468306113-847-1-git-send-email-famz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Fam Zheng 2016-07-12 14:48:33 +08:00 committed by Paolo Bonzini
parent 73f40c1895
commit d27ba624aa
1 changed files with 2 additions and 1 deletions
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3
include/qemu/osdep.h
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@ -151,7 +151,8 @@ extern int daemon(int, int);
/* Minimum function that returns zero only iff both values are zero.
* Intended for use with unsigned values only. */
#ifndef MIN_NON_ZERO
#define MIN_NON_ZERO(a, b) (((a) != 0 && (a) < (b)) ? (a) : (b))
#define MIN_NON_ZERO(a, b) ((a) == 0 ? (b) : \
((b) == 0 ? (a) : (MIN(a, b))))
#endif
/* Round number down to multiple */