Remove offsetof definition

This was only needed to deal with some ancient and no longer supported
systems.

Reviewed-by: Tom Lane <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/9a5223a2-3e25-d4fb-f092-01ec17428584%40enterprisedb.com

diff --git a/src/include/c.h b/src/include/c.h
index dfc366b026f47ee71cb2f709688cf77ebbccf788..a381f9a6c40174a1ce1f9662fb042e7899d797b4 100644 (file)
--- a/src/include/c.h
+++ b/src/include/c.h
@@ -30,7 +30,7 @@
  *             2)              bool, true, false
  *             3)              standard system types
  *             4)              IsValid macros for system types
- *             5)              offsetof, lengthof, alignment
+ *             5)              lengthof, alignment
  *             6)              assertions
  *             7)              widely useful macros
  *             8)              random stuff
@@ -703,20 +703,9 @@ typedef NameData *Name;
 
 
 /* ----------------------------------------------------------------
- *                             Section 5:      offsetof, lengthof, alignment
+ *                             Section 5:      lengthof, alignment
  * ----------------------------------------------------------------
  */
-/*
- * offsetof
- *             Offset of a structure/union field within that structure/union.
- *
- *             XXX This is supposed to be part of stddef.h, but isn't on
- *             some systems (like SunOS 4).
- */
-#ifndef offsetof
-#define offsetof(type, field)  ((long) &((type *)0)->field)
-#endif                                                 /* offsetof */
-
 /*
  * lengthof
  *             Number of elements in an array.