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[PATCH 1/2] block/block-copy: Fix uninitialized variable in block_copy_t


From: Philippe Mathieu-Daudé
Subject: [PATCH 1/2] block/block-copy: Fix uninitialized variable in block_copy_task_entry
Date: Thu, 7 May 2020 14:11:28 +0200

Fix when building with -Os:

    CC      block/block-copy.o
  block/block-copy.c: In function ‘block_copy_task_entry’:
  block/block-copy.c:428:38: error: ‘error_is_read’ may be used uninitialized 
in this function [-Werror=maybe-uninitialized]
    428 |         t->call_state->error_is_read = error_is_read;
        |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
 block/block-copy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/block-copy.c b/block/block-copy.c
index 03500680f7..83e16c89d9 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -418,7 +418,7 @@ out:
 static coroutine_fn int block_copy_task_entry(AioTask *task)
 {
     BlockCopyTask *t = container_of(task, BlockCopyTask, task);
-    bool error_is_read;
+    bool error_is_read = false;
     int ret;
 
     ret = block_copy_do_copy(t->s, t->offset, t->bytes, t->zeroes,
-- 
2.21.3




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