qemu: fix null string specifier argument in qemuDomainBlockJobAbort

Detected by gcc 11 -Wformat-overflow:
../../src/qemu/qemu_driver.c: In function ‘qemuDomainBlockJobAbort’:
../../src/util/virerror.h:176:5: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
  176 |     virReportErrorHelper(VIR_FROM_THIS, code, __FILE__, \
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  177 |                          __FUNCTION__, __LINE__, __VA_ARGS__)
      |                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src/qemu/qemu_driver.c:14475:17: note: in expansion of macro ‘virReportError’
14475 |                 virReportError(VIR_ERR_OPERATION_FAILED,
      |                 ^~~~~~~~~~~~~~
../../src/qemu/qemu_driver.c:14476:73: note: format string is defined here
14476 |                                _("block job '%s' failed while pivoting: %s"),
      |                                                                         ^~

Signed-off-by: Scott Davis <scott.davis@starlab.io>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 6631edb9d661d5425d43ef531e771a00c0c71650..d3ba74c14ac80d7d7356eeb0907ca7b8fbec86ee 100644 (file)
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -14581,13 +14581,13 @@ qemuDomainBlockJobAbort(virDomainPtr dom,
         if (pivot &&
             job->state == QEMU_BLOCKJOB_STATE_FAILED) {
             if (job->errmsg) {
-                virReportError(VIR_ERR_OPERATION_FAILED,
-                               _("block job '%s' failed while pivoting"),
-                               job->name);
-            } else {
                 virReportError(VIR_ERR_OPERATION_FAILED,
                                _("block job '%s' failed while pivoting: %s"),
                                job->name, job->errmsg);
+            } else {
+                virReportError(VIR_ERR_OPERATION_FAILED,
+                               _("block job '%s' failed while pivoting"),
+                               job->name);
             }
 
             ret = -1;