commit c88bf8a216d8a4ed1c84a4adb9fb021b9feb5766
author Alexei Podtelezhnikov <apodtele@gmail.com> Fri Apr 11 22:58:26 2025 -0400
committer Alexei Podtelezhnikov <apodtele@gmail.com> Fri Apr 11 22:58:26 2025 -0400
tree be4a4234842627505d559e20b0220e307c1d734a
parent fb99fd63ecfa60c5c8720962372a6d986c4da3b5

[base, truetype] Silence UBSAN.

* src/truetype/ttinterp.c (TT_MulFix14_64): Use unsigned multiplication.
* include/freetype/internal/ftcalc.h (FT_MulFix_64): Ditto.

include/freetype/internal/ftcalc.h

diff --git a/include/freetype/internal/ftcalc.h b/include/freetype/internal/ftcalc.h
index 6be506c..1024cdb 100644
--- a/include/freetype/internal/ftcalc.h
+++ b/include/freetype/internal/ftcalc.h
@@ -41,7 +41,7 @@
   FT_MulFix_64( FT_Long  a,
                 FT_Long  b )
   {
-    FT_Int64  ab = (FT_Int64)a * b;
+    FT_Int64  ab = (FT_Int64)( (FT_UInt64)a * (FT_UInt64)b );
 
 
     ab += 0x8000 + ( ab >> 63 );  /* rounding phase */

src/truetype/ttinterp.c

diff --git a/src/truetype/ttinterp.c b/src/truetype/ttinterp.c
index 0300c42..b74f0c2 100644
--- a/src/truetype/ttinterp.c
+++ b/src/truetype/ttinterp.c
@@ -1168,7 +1168,7 @@
   TT_MulFix14_64( FT_F26Dot6  a,
                   FT_F2Dot14  b )
   {
-    FT_Int64  ab = (FT_Int64)a * b;
+    FT_Int64  ab = (FT_Int64)( (FT_UInt64)a * (FT_UInt64)b );
 
 
     ab += 0x2000 + ( ab >> 63 );  /* rounding phase */