From: Chen Qun <[email protected]>
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 <[email protected]>
Signed-off-by: Chen Qun <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Dr. David Alan Gilbert <[email protected]>
---
migration/migration.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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);
--
2.28.0
