Heinrich Schuchardt 175e4b01be cmd: setexpr: fix printf_str() ...

If vsnprintf() returns a negative number, (i >= remaining) will
possibly be true:

'i' is of type signed int and 'remaining' is of the unsigned type size_t.
The C language will convert i to an unsigned type before the comparison.

This can result in the wrong error type being indicated.

Checking for negative i should be done first.

Fixes: f4f8d8bb1a ("cmd: setexpr: add format string handling")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

2023-08-23 08:02:59 +02:00

16 KiB

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