Deal with architectures where ALIGNOF_DOUBLE < 4

This patch isn't really tested as I don't have such a machine, but I
have a bug report that on m68k machines, double values are aligned on
smaller than 4 byte boundaries. If ALIGNOF_DOUBLE < sizeof(int),
the "expected" sizeof of FcValue is miscomputed. Use the maximum of 4
(sizeof (int)) and ALIGNOF_DOUBLE when computing the expected size of
FcValue.

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/src/fcarch.c b/src/fcarch.c
index 09d24b3..5fe7d97 100644 (file)
--- a/src/fcarch.c
+++ b/src/fcarch.c
@@ -56,7 +56,9 @@ FC_ASSERT_STATIC (SIZEOF_VOID_P == sizeof (FcStrSet *));
 FC_ASSERT_STATIC (SIZEOF_VOID_P == sizeof (FcCharLeaf **));
 FC_ASSERT_STATIC (SIZEOF_VOID_P == sizeof (FcChar16 *));
 
-FC_ASSERT_STATIC (0x08 + 1*ALIGNOF_DOUBLE == sizeof (FcValue));
+#define FC_MAX(a,b)    ((a) > (b) ? (a) : (b))
+
+FC_ASSERT_STATIC (0x08 + 1*FC_MAX(4,ALIGNOF_DOUBLE) == sizeof (FcValue));
 FC_ASSERT_STATIC (0x00 + 2*SIZEOF_VOID_P == sizeof (FcPatternElt));
 FC_ASSERT_STATIC (0x08 + 2*SIZEOF_VOID_P == sizeof (FcPattern));
 FC_ASSERT_STATIC (0x08 + 2*SIZEOF_VOID_P == sizeof (FcCharSet));