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[libvirt] [PATCH 2/2] Revert "Prevent more compiler optimization of mockable functions"



This reverts commit e4b980c853d2114b25fa805a84ea288384416221.

When a binary links against a .a archive (as opposed to a shared library),
any symbols which are marked as 'weak' get silently dropped. As a result
when the binary later runs, those 'weak' functions have an address of
0x0 and thus crash when run.

This happened with virtlogd and virtlockd because they don't link to
libvirt.so, but instead just libvirt_util.a and libvirt_rpc.a. The
virRandomBits symbols was weak and so left out of the virtlogd &
virtlockd binaries, despite being required by virHashTable functions.

Various other binaries like libvirt_lxc, libvirt_iohelper, etc also
link directly to .a files instead of libvirt.so, so are potentially
at risk of dropping symbols leading to a later runtime crash.

This is normal linker behaviour because a weak symbol is not treated
as undefined, so nothing forces it to be pulled in from the .a You
have to force the linker to pull in weak symbols using -u$SYMNAME
which is not a practical approach.

This risk is silent bad linkage that affects runtime behaviour is
not acceptable for a fix that was merely trying to fix the test
suite. So stop using __weak__ again.

Signed-off-by: Daniel P. Berrange <berrange redhat com>
---
 build-aux/mock-noinline.pl      |  2 +-
 src/check-symfile.pl            |  2 +-
 src/internal.h                  | 23 +++++------------------
 src/qemu/qemu_capspriv.h        |  2 +-
 src/rpc/virnetsocket.h          |  4 ++--
 src/util/vircommand.h           |  2 +-
 src/util/vircrypto.h            |  2 +-
 src/util/virfile.h              |  2 +-
 src/util/virhostcpu.h           |  4 ++--
 src/util/virmacaddr.h           |  2 +-
 src/util/virnetdev.h            |  8 ++++----
 src/util/virnetdevip.h          |  2 +-
 src/util/virnetdevopenvswitch.h |  2 +-
 src/util/virnetdevtap.h         |  6 +++---
 src/util/virnuma.h              | 16 ++++++++--------
 src/util/virrandom.h            |  6 +++---
 src/util/virscsi.h              |  2 +-
 src/util/virscsivhost.h         |  2 +-
 src/util/virtpm.h               |  2 +-
 src/util/virutil.h              | 10 +++++-----
 src/util/viruuid.h              |  2 +-
 21 files changed, 45 insertions(+), 58 deletions(-)

diff --git a/build-aux/mock-noinline.pl b/build-aux/mock-noinline.pl
index 2745d4b..eafe20d 100644
--- a/build-aux/mock-noinline.pl
+++ b/build-aux/mock-noinline.pl
@@ -43,7 +43,7 @@ sub scan_annotations {
         } elsif (/^\s*$/) {
             $func = undef;
         }
-        if (/ATTRIBUTE_MOCKABLE/) {
+        if (/ATTRIBUTE_NOINLINE/) {
             if (defined $func) {
                 $noninlined{$func} = 1;
             }
diff --git a/src/check-symfile.pl b/src/check-symfile.pl
index 3b062d0..d59a213 100755
--- a/src/check-symfile.pl
+++ b/src/check-symfile.pl
@@ -52,7 +52,7 @@ foreach my $elflib (@elflibs) {
     open NM, "-|", "nm", $elflib or die "cannot run 'nm $elflib': $!";
 
     while (<NM>) {
-        next unless /^\S+\s(?:[TBDW])\s(\S+)\s*$/;
+        next unless /^\S+\s(?:[TBD])\s(\S+)\s*$/;
 
         $gotsyms{$1} = 1;
     }
diff --git a/src/internal.h b/src/internal.h
index 00edd4f..c29f20f 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -113,26 +113,13 @@
 # endif
 
 /**
- * ATTRIBUTE_MOCKABLE:
- *
- * Ensure that the symbol can be overridden in a mock
- * library preload. This implies a number of attributes
- *
- *  - noinline: prevents the body being inlined to
- *              callers,
- *  - noclone: prevents specialized copies of the
- *             function body being created for different
- *             callers
- *  - weak: prevents the compiler making optimizations
- *          such as constant return value propagation
+ * ATTRIBUTE_NOINLINE:
  *
+ * Force compiler not to inline a method. Should be used if
+ * the method need to be overridable by test mocks.
  */
-# ifndef ATTRIBUTE_MOCKABLE
-#  if __GNUC_PREREQ(4, 5)
-#   define ATTRIBUTE_MOCKABLE __attribute__((__noinline__, __noclone__, __weak__))
-#  else
-#   define ATTRIBUTE_MOCKABLE __attribute__((__noinline__, __weak__))
-#  endif
+# ifndef ATTRIBUTE_NOINLINE
+#  define ATTRIBUTE_NOINLINE __attribute__((__noinline__))
 # endif
 
 /**
diff --git a/src/qemu/qemu_capspriv.h b/src/qemu/qemu_capspriv.h
index 6cc189e..94fa75b 100644
--- a/src/qemu/qemu_capspriv.h
+++ b/src/qemu/qemu_capspriv.h
@@ -95,7 +95,7 @@ virQEMUCapsSetCPUModelInfo(virQEMUCapsPtr qemuCaps,
 virCPUDefPtr
 virQEMUCapsProbeHostCPUForEmulator(virCapsPtr caps,
                                    virQEMUCapsPtr qemuCaps,
-                                   virDomainVirtType type) ATTRIBUTE_MOCKABLE;
+                                   virDomainVirtType type) ATTRIBUTE_NOINLINE;
 
 void
 virQEMUCapsSetGICCapabilities(virQEMUCapsPtr qemuCaps,
diff --git a/src/rpc/virnetsocket.h b/src/rpc/virnetsocket.h
index 3c2945e..de795af 100644
--- a/src/rpc/virnetsocket.h
+++ b/src/rpc/virnetsocket.h
@@ -137,10 +137,10 @@ int virNetSocketGetUNIXIdentity(virNetSocketPtr sock,
                                 gid_t *gid,
                                 pid_t *pid,
                                 unsigned long long *timestamp)
-    ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_NOINLINE;
 int virNetSocketGetSELinuxContext(virNetSocketPtr sock,
                                   char **context)
-    ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_NOINLINE;
 
 int virNetSocketSetBlocking(virNetSocketPtr sock,
                             bool blocking);
diff --git a/src/util/vircommand.h b/src/util/vircommand.h
index c042a53..e7c2e51 100644
--- a/src/util/vircommand.h
+++ b/src/util/vircommand.h
@@ -58,7 +58,7 @@ enum {
 
 void virCommandPassFD(virCommandPtr cmd,
                       int fd,
-                      unsigned int flags) ATTRIBUTE_MOCKABLE;
+                      unsigned int flags) ATTRIBUTE_NOINLINE;
 
 void virCommandPassListenFDs(virCommandPtr cmd);
 
diff --git a/src/util/vircrypto.h b/src/util/vircrypto.h
index 50400c6..068602f 100644
--- a/src/util/vircrypto.h
+++ b/src/util/vircrypto.h
@@ -55,6 +55,6 @@ int virCryptoEncryptData(virCryptoCipher algorithm,
     ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(6)
     ATTRIBUTE_NONNULL(8) ATTRIBUTE_NONNULL(9) ATTRIBUTE_RETURN_CHECK;
 
-uint8_t *virCryptoGenerateRandom(size_t nbytes) ATTRIBUTE_MOCKABLE;
+uint8_t *virCryptoGenerateRandom(size_t nbytes) ATTRIBUTE_NOINLINE;
 
 #endif /* __VIR_CRYPTO_H__ */
diff --git a/src/util/virfile.h b/src/util/virfile.h
index 32c9115..57ceb80 100644
--- a/src/util/virfile.h
+++ b/src/util/virfile.h
@@ -188,7 +188,7 @@ void virFileActivateDirOverride(const char *argv0)
 
 off_t virFileLength(const char *path, int fd) ATTRIBUTE_NONNULL(1);
 bool virFileIsDir (const char *file) ATTRIBUTE_NONNULL(1);
-bool virFileExists(const char *file) ATTRIBUTE_NONNULL(1) ATTRIBUTE_MOCKABLE;
+bool virFileExists(const char *file) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NOINLINE;
 bool virFileIsExecutable(const char *file) ATTRIBUTE_NONNULL(1);
 
 enum {
diff --git a/src/util/virhostcpu.h b/src/util/virhostcpu.h
index 3b30a0d..67033de 100644
--- a/src/util/virhostcpu.h
+++ b/src/util/virhostcpu.h
@@ -38,7 +38,7 @@ bool virHostCPUHasBitmap(void);
 virBitmapPtr virHostCPUGetPresentBitmap(void);
 virBitmapPtr virHostCPUGetOnlineBitmap(void);
 int virHostCPUGetCount(void);
-int virHostCPUGetThreadsPerSubcore(virArch arch) ATTRIBUTE_MOCKABLE;
+int virHostCPUGetThreadsPerSubcore(virArch arch) ATTRIBUTE_NOINLINE;
 
 int virHostCPUGetMap(unsigned char **cpumap,
                      unsigned int *online,
@@ -51,7 +51,7 @@ int virHostCPUGetInfo(virArch hostarch,
                       unsigned int *cores,
                       unsigned int *threads);
 
-int virHostCPUGetKVMMaxVCPUs(void) ATTRIBUTE_MOCKABLE;
+int virHostCPUGetKVMMaxVCPUs(void) ATTRIBUTE_NOINLINE;
 
 int virHostCPUStatsAssign(virNodeCPUStatsPtr param,
                           const char *name,
diff --git a/src/util/virmacaddr.h b/src/util/virmacaddr.h
index 79492cd..f4f5e2c 100644
--- a/src/util/virmacaddr.h
+++ b/src/util/virmacaddr.h
@@ -48,7 +48,7 @@ void virMacAddrGetRaw(const virMacAddr *src, unsigned char dst[VIR_MAC_BUFLEN]);
 const char *virMacAddrFormat(const virMacAddr *addr,
                              char *str);
 void virMacAddrGenerate(const unsigned char prefix[VIR_MAC_PREFIX_BUFLEN],
-                        virMacAddrPtr addr) ATTRIBUTE_MOCKABLE;
+                        virMacAddrPtr addr) ATTRIBUTE_NOINLINE;
 int virMacAddrParse(const char* str,
                     virMacAddrPtr addr) ATTRIBUTE_RETURN_CHECK;
 int virMacAddrParseHex(const char* str,
diff --git a/src/util/virnetdev.h b/src/util/virnetdev.h
index 2e9a9c4..51fcae5 100644
--- a/src/util/virnetdev.h
+++ b/src/util/virnetdev.h
@@ -156,7 +156,7 @@ int virNetDevExists(const char *brname)
 
 int virNetDevSetOnline(const char *ifname,
                        bool online)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NOINLINE;
 int virNetDevGetOnline(const char *ifname,
                       bool *online)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
@@ -164,7 +164,7 @@ int virNetDevGetOnline(const char *ifname,
 
 int virNetDevSetMAC(const char *ifname,
                     const virMacAddr *macaddr)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NOINLINE;
 int virNetDevGetMAC(const char *ifname,
                     virMacAddrPtr macaddr)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
@@ -303,8 +303,8 @@ int virNetDevSysfsFile(char **pf_sysfs_device_link,
                        const char *ifname,
                        const char *file)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
-    ATTRIBUTE_RETURN_CHECK ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NOINLINE;
 
 int virNetDevRunEthernetScript(const char *ifname, const char *script)
-    ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_NOINLINE;
 #endif /* __VIR_NETDEV_H__ */
diff --git a/src/util/virnetdevip.h b/src/util/virnetdevip.h
index 972a49a..6b509ea 100644
--- a/src/util/virnetdevip.h
+++ b/src/util/virnetdevip.h
@@ -67,7 +67,7 @@ int virNetDevIPAddrAdd(const char *ifname,
                        virSocketAddr *addr,
                        virSocketAddr *peer,
                        unsigned int prefix)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NOINLINE;
 int virNetDevIPRouteAdd(const char *ifname,
                         virSocketAddrPtr addr,
                         unsigned int prefix,
diff --git a/src/util/virnetdevopenvswitch.h b/src/util/virnetdevopenvswitch.h
index dc677ca..51bb1dd 100644
--- a/src/util/virnetdevopenvswitch.h
+++ b/src/util/virnetdevopenvswitch.h
@@ -59,6 +59,6 @@ int virNetDevOpenvswitchInterfaceStats(const char *ifname,
 
 int virNetDevOpenvswitchGetVhostuserIfname(const char *path,
                                            char **ifname)
-    ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NOINLINE;
 
 #endif /* __VIR_NETDEV_OPENVSWITCH_H__ */
diff --git a/src/util/virnetdevtap.h b/src/util/virnetdevtap.h
index 1c4343e..0b17feb 100644
--- a/src/util/virnetdevtap.h
+++ b/src/util/virnetdevtap.h
@@ -39,7 +39,7 @@ int virNetDevTapCreate(char **ifname,
                        int *tapfd,
                        size_t tapfdSize,
                        unsigned int flags)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NOINLINE;
 
 int virNetDevTapDelete(const char *ifname,
                        const char *tunpath)
@@ -49,7 +49,7 @@ int virNetDevTapGetName(int tapfd, char **ifname)
     ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
 
 char* virNetDevTapGetRealDeviceName(char *ifname)
-      ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_MOCKABLE;
+      ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NOINLINE;
 
 typedef enum {
    VIR_NETDEV_TAP_CREATE_NONE = 0,
@@ -89,7 +89,7 @@ int virNetDevTapCreateInBridgePort(const char *brname,
                                    unsigned int *actualMTU,
                                    unsigned int flags)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
-    ATTRIBUTE_RETURN_CHECK ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NOINLINE;
 
 int virNetDevTapInterfaceStats(const char *ifname,
                                virDomainInterfaceStatsPtr stats)
diff --git a/src/util/virnuma.h b/src/util/virnuma.h
index 62b89e9..e4e1fd0 100644
--- a/src/util/virnuma.h
+++ b/src/util/virnuma.h
@@ -34,20 +34,20 @@ int virNumaSetupMemoryPolicy(virDomainNumatuneMemMode mode,
                              virBitmapPtr nodeset);
 
 virBitmapPtr virNumaGetHostMemoryNodeset(void);
-bool virNumaNodesetIsAvailable(virBitmapPtr nodeset) ATTRIBUTE_MOCKABLE;
-bool virNumaIsAvailable(void) ATTRIBUTE_MOCKABLE;
-int virNumaGetMaxNode(void) ATTRIBUTE_MOCKABLE;
-bool virNumaNodeIsAvailable(int node) ATTRIBUTE_MOCKABLE;
+bool virNumaNodesetIsAvailable(virBitmapPtr nodeset) ATTRIBUTE_NOINLINE;
+bool virNumaIsAvailable(void) ATTRIBUTE_NOINLINE;
+int virNumaGetMaxNode(void) ATTRIBUTE_NOINLINE;
+bool virNumaNodeIsAvailable(int node) ATTRIBUTE_NOINLINE;
 int virNumaGetDistances(int node,
                         int **distances,
-                        int *ndistances) ATTRIBUTE_MOCKABLE;
+                        int *ndistances) ATTRIBUTE_NOINLINE;
 int virNumaGetNodeMemory(int node,
                          unsigned long long *memsize,
-                         unsigned long long *memfree) ATTRIBUTE_MOCKABLE;
+                         unsigned long long *memfree) ATTRIBUTE_NOINLINE;
 
 unsigned int virNumaGetMaxCPUs(void);
 
-int virNumaGetNodeCPUs(int node, virBitmapPtr *cpus) ATTRIBUTE_MOCKABLE;
+int virNumaGetNodeCPUs(int node, virBitmapPtr *cpus) ATTRIBUTE_NOINLINE;
 
 int virNumaGetPageInfo(int node,
                        unsigned int page_size,
@@ -59,7 +59,7 @@ int virNumaGetPages(int node,
                     unsigned int **pages_avail,
                     unsigned int **pages_free,
                     size_t *npages)
-    ATTRIBUTE_NONNULL(5) ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_NONNULL(5) ATTRIBUTE_NOINLINE;
 int virNumaSetPagePoolSize(int node,
                            unsigned int page_size,
                            unsigned long long page_count,
diff --git a/src/util/virrandom.h b/src/util/virrandom.h
index 990a456..7a984ee 100644
--- a/src/util/virrandom.h
+++ b/src/util/virrandom.h
@@ -24,11 +24,11 @@
 
 # include "internal.h"
 
-uint64_t virRandomBits(int nbits) ATTRIBUTE_MOCKABLE;
+uint64_t virRandomBits(int nbits) ATTRIBUTE_NOINLINE;
 double virRandom(void);
 uint32_t virRandomInt(uint32_t max);
 int virRandomBytes(unsigned char *buf, size_t buflen)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_MOCKABLE;
-int virRandomGenerateWWN(char **wwn, const char *virt_type) ATTRIBUTE_MOCKABLE;
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NOINLINE;
+int virRandomGenerateWWN(char **wwn, const char *virt_type) ATTRIBUTE_NOINLINE;
 
 #endif /* __VIR_RANDOM_H__ */
diff --git a/src/util/virscsi.h b/src/util/virscsi.h
index eed563d..9f8b3ec 100644
--- a/src/util/virscsi.h
+++ b/src/util/virscsi.h
@@ -37,7 +37,7 @@ char *virSCSIDeviceGetSgName(const char *sysfs_prefix,
                              const char *adapter,
                              unsigned int bus,
                              unsigned int target,
-                             unsigned long long unit) ATTRIBUTE_MOCKABLE;
+                             unsigned long long unit) ATTRIBUTE_NOINLINE;
 char *virSCSIDeviceGetDevName(const char *sysfs_prefix,
                               const char *adapter,
                               unsigned int bus,
diff --git a/src/util/virscsivhost.h b/src/util/virscsivhost.h
index f9272a6..21887dd 100644
--- a/src/util/virscsivhost.h
+++ b/src/util/virscsivhost.h
@@ -61,6 +61,6 @@ void virSCSIVHostDeviceGetUsedBy(virSCSIVHostDevicePtr dev,
                                  const char **drv_name,
                                  const char **dom_name);
 void virSCSIVHostDeviceFree(virSCSIVHostDevicePtr dev);
-int virSCSIVHostOpenVhostSCSI(int *vhostfd) ATTRIBUTE_MOCKABLE;
+int virSCSIVHostOpenVhostSCSI(int *vhostfd) ATTRIBUTE_NOINLINE;
 
 #endif /* __VIR_SCSIHOST_H__ */
diff --git a/src/util/virtpm.h b/src/util/virtpm.h
index 7067bb5..b21fc05 100644
--- a/src/util/virtpm.h
+++ b/src/util/virtpm.h
@@ -22,6 +22,6 @@
 #ifndef __VIR_TPM_H__
 # define __VIR_TPM_H__
 
-char *virTPMCreateCancelPath(const char *devpath) ATTRIBUTE_MOCKABLE;
+char *virTPMCreateCancelPath(const char *devpath) ATTRIBUTE_NOINLINE;
 
 #endif /* __VIR_TPM_H__ */
diff --git a/src/util/virutil.h b/src/util/virutil.h
index 35e5ca3..4938255 100644
--- a/src/util/virutil.h
+++ b/src/util/virutil.h
@@ -139,8 +139,8 @@ char *virGetUserConfigDirectory(void);
 char *virGetUserCacheDirectory(void);
 char *virGetUserRuntimeDirectory(void);
 char *virGetUserShell(uid_t uid);
-char *virGetUserName(uid_t uid) ATTRIBUTE_MOCKABLE;
-char *virGetGroupName(gid_t gid) ATTRIBUTE_MOCKABLE;
+char *virGetUserName(uid_t uid) ATTRIBUTE_NOINLINE;
+char *virGetGroupName(gid_t gid) ATTRIBUTE_NOINLINE;
 int virGetGroupList(uid_t uid, gid_t group, gid_t **groups)
     ATTRIBUTE_NONNULL(3);
 int virGetUserID(const char *name,
@@ -201,12 +201,12 @@ verify((int)VIR_TRISTATE_BOOL_ABSENT == (int)VIR_TRISTATE_SWITCH_ABSENT);
 
 unsigned int virGetListenFDs(void);
 
-long virGetSystemPageSize(void) ATTRIBUTE_MOCKABLE;
-long virGetSystemPageSizeKB(void) ATTRIBUTE_MOCKABLE;
+long virGetSystemPageSize(void) ATTRIBUTE_NOINLINE;
+long virGetSystemPageSizeKB(void) ATTRIBUTE_NOINLINE;
 
 unsigned long long virMemoryLimitTruncate(unsigned long long value);
 bool virMemoryLimitIsSet(unsigned long long value);
-unsigned long long virMemoryMaxValue(bool ulong) ATTRIBUTE_MOCKABLE;
+unsigned long long virMemoryMaxValue(bool ulong) ATTRIBUTE_NOINLINE;
 
 /**
  * VIR_ASSIGN_IS_OVERFLOW:
diff --git a/src/util/viruuid.h b/src/util/viruuid.h
index 3b41b42..1d67e9e 100644
--- a/src/util/viruuid.h
+++ b/src/util/viruuid.h
@@ -49,7 +49,7 @@ int virGetHostUUID(unsigned char *host_uuid) ATTRIBUTE_NONNULL(1);
 
 int virUUIDIsValid(unsigned char *uuid);
 
-int virUUIDGenerate(unsigned char *uuid) ATTRIBUTE_MOCKABLE;
+int virUUIDGenerate(unsigned char *uuid) ATTRIBUTE_NOINLINE;
 
 int virUUIDParse(const char *uuidstr,
                  unsigned char *uuid)
-- 
2.9.4


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