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>
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@ -365,7 +365,7 @@ int migrate_send_rp_req_pages(MigrationIncomingState *mis,
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RAMBlock *rb, ram_addr_t start, uint64_t haddr)
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RAMBlock *rb, ram_addr_t start, uint64_t haddr)
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{
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{
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void *aligned = (void *)(uintptr_t)(haddr & (-qemu_ram_pagesize(rb)));
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void *aligned = (void *)(uintptr_t)(haddr & (-qemu_ram_pagesize(rb)));
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bool received;
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bool received = false;
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WITH_QEMU_LOCK_GUARD(&mis->page_request_mutex) {
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WITH_QEMU_LOCK_GUARD(&mis->page_request_mutex) {
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received = ramblock_recv_bitmap_test_byte_offset(rb, start);
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received = ramblock_recv_bitmap_test_byte_offset(rb, start);
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