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authorChen Qun <kuhn.chenqun@huawei.com>2020-11-11 22:22:03 +0800
committerDr. David Alan Gilbert <dgilbert@redhat.com>2020-11-12 14:49:16 +0000
commita24292830b7a356f528760e065c0012ff56e18ab (patch)
tree119aca0afecf9c634c494e6ba3bf57e69954898f /migration
parenta1af605bd5ade1a6dd571f553a6746b97f3d6869 (diff)
migration: fix uninitialized variable warning in migrate_send_rp_req_pages()
After the WITH_QEMU_LOCK_GUARD macro is added, the compiler cannot identify that the statements in the macro must be executed. As a result, some variables assignment statements in the macro may be considered as unexecuted by the compiler. When the -Wmaybe-uninitialized capability is enabled on GCC9,the compiler showed warning: migration/migration.c: In function ‘migrate_send_rp_req_pages’: migration/migration.c:384:8: warning: ‘received’ may be used uninitialized in this function [-Wmaybe-uninitialized] 384 | if (received) { | ^ Add a default value for 'received' to prevented the warning. Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20201111142203.2359370-6-kuhn.chenqun@huawei.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'migration')
-rw-r--r--migration/migration.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/migration/migration.c b/migration/migration.c
index 3263aa55a9..f696e22fab 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -365,7 +365,7 @@ int migrate_send_rp_req_pages(MigrationIncomingState *mis,
RAMBlock *rb, ram_addr_t start, uint64_t haddr)
{
void *aligned = (void *)(uintptr_t)(haddr & (-qemu_ram_pagesize(rb)));
- bool received;
+ bool received = false;
WITH_QEMU_LOCK_GUARD(&mis->page_request_mutex) {
received = ramblock_recv_bitmap_test_byte_offset(rb, start);