[Qemu-devel] [PATCH 08/43] kvm: made printf always compile in debug output

[Danil Antonov]

>From 7aed02e5ee9662d4ff8e7857594fdf7b3b52c9e4 Mon Sep 17 00:00:00 2001
From: Danil Antonov <address@hidden>
Date: Wed, 29 Mar 2017 02:16:54 +0300
Subject: [PATCH 08/43] kvm: made printf always compile in debug output

Wrapped printf calls inside debug macros (DPRINTF) in `if` statement.
This will ensure that printf function will always compile even if debug
output is turned off and, in turn, will prevent bitrot of the format
strings.

Signed-off-by: Danil Antonov <address@hidden>
---
 target/i386/kvm.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 55865db..46762e2 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -47,15 +47,15 @@
 #include "exec/memattrs.h"
 #include "trace.h"

-//#define DEBUG_KVM
-
-#ifdef DEBUG_KVM
-#define DPRINTF(fmt, ...) \
-    do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) \
-    do { } while (0)
-#endif
+#ifndef DEBUG_KVM
+#define DEBUG_KVM 0
+#endif
+
+#define DPRINTF(fmt, ...) do {                \
+    if (DEBUG_KVM) {                         \
+        fprintf(stderr, fmt, ## __VA_ARGS__); \
+    }                                         \
+} while (0);

 #define MSR_KVM_WALL_CLOCK  0x11
 #define MSR_KVM_SYSTEM_TIME 0x12
-- 
2.8.0.rc3