On 25/7/22 16:05, Alex Bennée wrote:
From: Peter Maydell <[email protected]>
The documentation comment for qemu_semihosting_console_write() says
* Returns: number of bytes written -- this should only ever be short
* on some sort of i/o error.
and the callsites rely on this. However, the implementation code
path which sends console output to a chardev doesn't honour this,
and will return negative values on error. Bring it into line with
the other implementation codepaths and the documentation, so that
it returns 0 on error.
Spotted by Coverity, because console_write() passes the return value
to unlock_user(), which doesn't accept a negative length.
Resolves: Coverity CID 1490288
Signed-off-by: Peter Maydell <[email protected]>
Reviewed-by: Richard Henderson <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Alex Bennée <[email protected]>
---
semihosting/console.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
