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-rw-r--r--Build/source/libs/freetype2/freetype-src/src/type1/t1load.c44
1 files changed, 34 insertions, 10 deletions
diff --git a/Build/source/libs/freetype2/freetype-src/src/type1/t1load.c b/Build/source/libs/freetype2/freetype-src/src/type1/t1load.c
index 5cffdfaac47..d0ea36badb1 100644
--- a/Build/source/libs/freetype2/freetype-src/src/type1/t1load.c
+++ b/Build/source/libs/freetype2/freetype-src/src/type1/t1load.c
@@ -4,7 +4,7 @@
*
* Type 1 font loader (body).
*
- * Copyright (C) 1996-2019 by
+ * Copyright (C) 1996-2020 by
* David Turner, Robert Wilhelm, and Werner Lemberg.
*
* This file is part of the FreeType project, and may only be used,
@@ -309,31 +309,55 @@
FT_UInt i;
FT_Fixed axiscoords[T1_MAX_MM_AXIS];
PS_Blend blend = face->blend;
+ FT_UShort* axis_flags;
+
+ FT_Offset mmvar_size;
+ FT_Offset axis_flags_size;
+ FT_Offset axis_size;
error = T1_Get_Multi_Master( face, &mmaster );
if ( error )
goto Exit;
- if ( FT_ALLOC( mmvar,
- sizeof ( FT_MM_Var ) +
- mmaster.num_axis * sizeof ( FT_Var_Axis ) ) )
+
+ /* the various `*_size' variables, which we also use as */
+ /* offsets into the `mmvar' array, must be multiples of the */
+ /* pointer size (except the last one); without such an */
+ /* alignment there might be runtime errors due to */
+ /* misaligned addresses */
+#undef ALIGN_SIZE
+#define ALIGN_SIZE( n ) \
+ ( ( (n) + sizeof (void*) - 1 ) & ~( sizeof (void*) - 1 ) )
+
+ mmvar_size = ALIGN_SIZE( sizeof ( FT_MM_Var ) );
+ axis_flags_size = ALIGN_SIZE( mmaster.num_axis *
+ sizeof ( FT_UShort ) );
+ axis_size = mmaster.num_axis * sizeof ( FT_Var_Axis );
+
+ if ( FT_ALLOC( mmvar, mmvar_size +
+ axis_flags_size +
+ axis_size ) )
goto Exit;
mmvar->num_axis = mmaster.num_axis;
mmvar->num_designs = mmaster.num_designs;
mmvar->num_namedstyles = 0; /* Not supported */
- mmvar->axis = (FT_Var_Axis*)&mmvar[1];
- /* Point to axes after MM_Var struct */
- mmvar->namedstyle = NULL;
+
+ /* while axis flags are meaningless here, we have to provide the array */
+ /* to make `FT_Get_Var_Axis_Flags' work: the function expects that the */
+ /* values directly follow the data of `FT_MM_Var' */
+ axis_flags = (FT_UShort*)( (char*)mmvar + mmvar_size );
+ for ( i = 0; i < mmaster.num_axis; i++ )
+ axis_flags[i] = 0;
+
+ mmvar->axis = (FT_Var_Axis*)( (char*)axis_flags + axis_flags_size );
+ mmvar->namedstyle = NULL;
for ( i = 0; i < mmaster.num_axis; i++ )
{
mmvar->axis[i].name = mmaster.axis[i].name;
mmvar->axis[i].minimum = INT_TO_FIXED( mmaster.axis[i].minimum );
mmvar->axis[i].maximum = INT_TO_FIXED( mmaster.axis[i].maximum );
- mmvar->axis[i].def = ( mmvar->axis[i].minimum +
- mmvar->axis[i].maximum ) / 2;
- /* Does not apply. But this value is in range */
mmvar->axis[i].strid = ~0U; /* Does not apply */
mmvar->axis[i].tag = ~0U; /* Does not apply */