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| author | Chen Qun <kuhn.chenqun@huawei.com> | 2020-11-11 22:22:03 +0800 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-11-12 14:49:16 +0000 |
| commit | a24292830b7a356f528760e065c0012ff56e18ab (patch) | |
| tree | 119aca0afecf9c634c494e6ba3bf57e69954898f /migration | |
| parent | a1af605bd5ade1a6dd571f553a6746b97f3d6869 (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.c | 2 |
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); |