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qtest: fix 'expression is always false' build failure in qtest_has_accel()

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If KVM is disabled or not present, qtest library build
may fail with:
   libqtest.c: In function 'qtest_has_accel':
      comparison of unsigned expression < 0 is always false
      [-Werror=type-limits]
         for (i = 0; i < ARRAY_SIZE(targets); i++) {

due to empty 'targets' array.
Fix it by making sure that CONFIG_KVM_TARGETS isn't empty.

Fixes: e741aff0f4 ("tests: qtest: add qtest_has_accel() to check if tested binary supports accelerator")
Reported-by: Jason Andryuk <jandryuk@gmail.com>
Suggested-by: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20211027151012.2639284-1-imammedo@redhat.com>
Tested-by: Jason Andryuk <jandryuk@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2021-10-27 11:10:12 -04:00 committed by Michael S. Tsirkin
parent af531756d2
commit 44d3d89814
1 changed files with 1 additions and 1 deletions
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meson.build
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@ -75,7 +75,7 @@ else
kvm_targets = []
endif
kvm_targets_c = ''
kvm_targets_c = '""'
if not get_option('kvm').disabled() and targetos == 'linux'
kvm_targets_c = '"' + '" ,"'.join(kvm_targets) + '"'
endif