Commit feba23b1 authored by Pavel Borzenkov's avatar Pavel Borzenkov Committed by Stefan Hajnoczi
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qed: don't pass NULL to memcpy 



Spotted by Clang Analyzer

[Note this memcpy call has always been safe because the length will be 0
when the pointer is NULL]

Signed-off-by: default avatarPavel Borzenkov <pavel.borzenkov@gmail.com>
Signed-off-by: default avatarStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
parent 8379e46d

block/qed.c

+4 −2
Original line number Diff line number Diff line
@@ -1425,8 +1425,10 @@ static int bdrv_qed_change_backing_file(BlockDriverState *bs, 
    memcpy(buffer, &le_header, sizeof(le_header));

    buffer_len = sizeof(le_header);



    if (backing_file) {

        memcpy(buffer + buffer_len, backing_file, backing_file_len);

        buffer_len += backing_file_len;

    }



    /* Write new header */

    ret = bdrv_pwrite_sync(bs->file, 0, buffer, buffer_len);