Add missing #include

[ulut.git] / ulut / ul_utdefs.h

diff --git a/ulut/ul_utdefs.h b/ulut/ul_utdefs.h
index a85614e57ad7cb9e0c3bd4ef8df2d44d540b3b9d..aa96537695b45bd8545657e1bdb0e6a54d5acd96 100644 (file)
--- a/ulut/ul_utdefs.h
+++ b/ulut/ul_utdefs.h
@@ -9,6 +9,8 @@
 #ifndef _UL_UTDEFS_H
 #define _UL_UTDEFS_H
 
+#include <stddef.h> /* For size_t */
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -66,14 +68,24 @@ extern "C" {
 #endif /*__GNUC__*/
 #endif /*UL_CONTAINEROF*/
 
-#ifndef UL_ALIGNOF
+#ifndef UL_ALIGNOF_FIELD
+#define        UL_ALIGNOF_FIELD(_type) UL_OFFSETOF(struct {char _fld0; _type _fld1;}, _fld1)
+#endif /*UL_ALIGNOF*/
+
+#ifndef UL_ALIGNOF_TYPE
 #ifdef  __GNUC__
-#define        UL_ALIGNOF(_type) __alignof__(_type)
+/* The compiler provided alignment for performance can differ from ABI struct one */
+#define        UL_ALIGNOF_TYPE(_type) __alignof__(_type)
 #else /*__GNUC__*/
-#define        UL_ALIGNOF(_type) UL_OFFSETOF(struct {char _fld0; _type _fld1;}, _fld1)
+#define UL_ALIGNOF_TYPE UL_ALIGNOF_FIELD
 #endif /*__GNUC__*/
 #endif /*UL_ALIGNOF*/
 
+#ifndef UL_ALIGNOF
+#define        UL_ALIGNOF UL_ALIGNOF_FIELD
+#endif /*UL_ALIGNOF*/
+
+
 #ifndef UL_NOPSTATEMENT
 #define UL_NOPSTATEMENT do { } while(0)
 #endif