[PATCH 1/4] dinput: Avoid invalid rglDirection access when effect cAxes is 0.
Rémi Bernon
rbernon at codeweavers.com
Tue Feb 22 06:04:27 CST 2022
Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
---
dlls/dinput/joystick_hid.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/dlls/dinput/joystick_hid.c b/dlls/dinput/joystick_hid.c
index 00fd01b483a..80991e8c150 100644
--- a/dlls/dinput/joystick_hid.c
+++ b/dlls/dinput/joystick_hid.c
@@ -2296,7 +2296,7 @@ static void convert_directions_to_spherical( const DIEFFECT *in, DIEFFECT *out )
tmp = atan2( in->rglDirection[i], tmp );
out->rglDirection[i - 1] = tmp * 18000 / M_PI;
}
- out->rglDirection[in->cAxes - 1] = 0;
+ if (in->cAxes) out->rglDirection[in->cAxes - 1] = 0;
out->cAxes = in->cAxes;
break;
case DIEFF_POLAR:
@@ -2306,7 +2306,8 @@ static void convert_directions_to_spherical( const DIEFFECT *in, DIEFFECT *out )
out->cAxes = in->cAxes;
break;
case DIEFF_SPHERICAL:
- for (i = 0; i < in->cAxes - 1; ++i)
+ if (!in->cAxes) i = 0;
+ else for (i = 0; i < in->cAxes - 1; ++i)
{
out->rglDirection[i] = in->rglDirection[i] % 36000;
if (out->rglDirection[i] < 0) out->rglDirection[i] += 36000;
--
2.34.1
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