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Code Issues 9 Releases Wiki Activity

* src/psaux/pshints.c (cf2_hintmap_insertHint): Fix midpoint computation. 

Replace '(start + end) / 2' with 'start + (end - start) / 2' to avoid
overflow.

Fixes #1180.
This commit is contained in:
Werner Lemberg 2022-09-30 23:25:02 +02:00
parent 2adb810c3d
commit de8f14a8e4
1 changed files with 4 additions and 2 deletions
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6
src/psaux/pshints.c
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@ -693,8 +693,10 @@
CF2_Fixed midpoint =
cf2_hintmap_map(
hintmap->initialHintMap,
ADD_INT32( secondHintEdge->csCoord,
firstHintEdge->csCoord ) / 2 );
ADD_INT32(
firstHintEdge->csCoord,
SUB_INT32 ( secondHintEdge->csCoord,
firstHintEdge->csCoord ) / 2 ) );
CF2_Fixed halfWidth =
FT_MulFix( SUB_INT32( secondHintEdge->csCoord,
firstHintEdge->csCoord ) / 2,