* src/truetype/ttinterp.c (TT_DotFix14): Silence UBSAN.

apodtele · apodtele · commit 89e3e98e4727 · 2025-05-16T13:19:26.000-04:00
diff --git a/src/truetype/ttinterp.c b/src/truetype/ttinterp.c
@@ -1327,7 +1327,7 @@
     FT_Int64  c = ADD_INT64( MUL_INT64( ax, bx ), MUL_INT64( ay, by ) );
 
 
-    c += 0x2000 + ( c >> 63 );  /* rounding phase */
+    c = ADD_INT64( c, 0x2000 + ( c >> 63 ) );  /* rounding phase */
 
     return (FT_F26Dot6)( c >> 14 );
   }

Original file line number	Diff line number	Diff line change
`@@ -1327,7 +1327,7 @@`
`1327`	`1327`	`FT_Int64 c = ADD_INT64( MUL_INT64( ax, bx ), MUL_INT64( ay, by ) );`
`1328`	`1328`
`1329`	`1329`
`1330`		`- c += 0x2000 + ( c >> 63 ); /* rounding phase */`
	`1330`	`+ c = ADD_INT64( c, 0x2000 + ( c >> 63 ) ); /* rounding phase */`
`1331`	`1331`
`1332`	`1332`	`return (FT_F26Dot6)( c >> 14 );`
`1333`	`1333`	`}`