If the target is a NULL buffer (with a zero length), we should
always return the full size the format would have needed, even if
UCRTBASE_PRINTF_STANDARD_SNPRINTF_BEHAVIOUR isn't specified.
Signed-off-by: Martin Storsjo <martin@martin.st>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Check the option flags whether the new or old legacy behaviours are
wanted.
For _MSVCR_VER < 140, don't check the option flags but hardcode them to
TRUE. (This avoids having to manually add all three flags into every
caller of pf_printf.) Mask out any other flags, to avoid other
out-of-range flags to be interpreted as the other flags (positional
params, invoke invalid param handler).
Signed-off-by: Martin Storsjo <martin@martin.st>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
When neither the "legacy vsprintf null termination" nor the "standard
snprintf behaviour" flags are specified, the functions return -2 when
the output string didn't fit (similar to old style msvcrt _snprintf that
returned -1), but they are null terminated (similar to the C99 snprintf
style behaviour). This is the same way as the C99 swprintf function
behaves.
Signed-off-by: Martin Storsjo <martin@martin.st>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Avoid using hardcoded magic numbers for these options.
Signed-off-by: Martin Storsjo <martin@martin.st>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Avoid repeating the test strings, calculate the expected return value
with code.
Signed-off-by: Martin Storsjo <martin@martin.st>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Not all functions are implemented (yet not all variants are
implemented in the normal msvcrt either).
The new functions are more generalized and are C99 compliant.
They take an options parameter that e.g. for the snprintf
family of functions indicate whether the truncation and return
value should be handled as before or in the standards compliant
way.
Signed-off-by: Martin Storsjo <martin@martin.st>
Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Martin Storsjo