From d8b2e5639a08155e6dad7d5befeb12c160c8118e Mon Sep 17 00:00:00 2001 From: Emanuele Giuseppe Esposito Date: Fri, 19 Mar 2021 12:22:18 +0100 Subject: [PATCH] tests/unit/test-block-iothread: fix maybe-uninitialized error on GCC 11 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When building qemu with GCC 11, test-block-iothread produces the following warning: ../tests/unit/test-block-iothread.c:148:11: error: ‘buf’ may be used uninitialized [-Werror=maybe-uninitialized] This is caused by buf[512] left uninitialized and passed to bdrv_save_vmstate() that expects a const uint8_t *, so the compiler assumes it will be read and expects the parameter to be initialized. Signed-off-by: Emanuele Giuseppe Esposito Reviewed-by: Paolo Bonzini Message-Id: <20210319112218.49609-1-eesposit@redhat.com> Signed-off-by: Thomas Huth --- tests/unit/test-block-iothread.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tests/unit/test-block-iothread.c b/tests/unit/test-block-iothread.c index 3f866a35c6..8cf172cb7a 100644 --- a/tests/unit/test-block-iothread.c +++ b/tests/unit/test-block-iothread.c @@ -89,7 +89,7 @@ static void test_sync_op_pread(BdrvChild *c) static void test_sync_op_pwrite(BdrvChild *c) { - uint8_t buf[512]; + uint8_t buf[512] = { 0 }; int ret; /* Success */ @@ -117,7 +117,7 @@ static void test_sync_op_blk_pread(BlockBackend *blk) static void test_sync_op_blk_pwrite(BlockBackend *blk) { - uint8_t buf[512]; + uint8_t buf[512] = { 0 }; int ret; /* Success */ @@ -141,7 +141,7 @@ static void test_sync_op_load_vmstate(BdrvChild *c) static void test_sync_op_save_vmstate(BdrvChild *c) { - uint8_t buf[512]; + uint8_t buf[512] = { 0 }; int ret; /* Error: Driver does not support snapshots */