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Correct crash when executing IP within twilight zone

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* src/sfnt.c (sfnt_address_zp2, sfnt_address_zp1)
(sfnt_address_zp0): Don't save into X or Y if the zone is set to
the twilight zone and they are NULL.
This commit is contained in:
Po Lu 2024-01-23 10:30:51 +08:00
parent a3d10046d9
commit 54abf10dfe
1 changed files with 12 additions and 0 deletions
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12
src/sfnt.c
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@ -8563,8 +8563,12 @@ sfnt_address_zp2 (struct sfnt_interpreter *interpreter,
if (number >= interpreter->twilight_zone_size)
TRAP ("address to ZP2 (twilight zone) out of bounds");
if (!x || !y)
goto next;
*x = interpreter->twilight_x[number];
*y = interpreter->twilight_y[number];
next:
if (!x_org || !y_org)
return;
@ -8614,8 +8618,12 @@ sfnt_address_zp1 (struct sfnt_interpreter *interpreter,
if (number >= interpreter->twilight_zone_size)
TRAP ("address to ZP1 (twilight zone) out of bounds");
if (!x || !y)
goto next;
*x = interpreter->twilight_x[number];
*y = interpreter->twilight_y[number];
next:
if (!x_org || !y_org)
return;
@ -8665,8 +8673,12 @@ sfnt_address_zp0 (struct sfnt_interpreter *interpreter,
if (number >= interpreter->twilight_zone_size)
TRAP ("address to ZP0 (twilight zone) out of bounds");
if (!x || !y)
goto next;
*x = interpreter->twilight_x[number];
*y = interpreter->twilight_y[number];
next:
if (!x_org || !y_org)
return;