Combine changelog entries.

diff --git a/src/ChangeLog b/src/ChangeLog
index 1adc153e953ff555790a03db16074592401bff4d..87e703b3dab4e3ad12eb8eca03ae52510fe0556d 100644 (file)
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,15 +1,5 @@
 2011-04-25  Paul Eggert  <eggert@cs.ucla.edu>
 
-       * lisp.h: (XVECTOR_SIZE): Remove.  All uses replaced with ASIZE.
-       (ASIZE): Now contains previous implementation of XVECTOR_SIZE
-       instead of invoking XVECTOR_SIZE.
-       (XVECTORLIKE_HEADER_SIZE): Remove.  The only use is now expanded.
-
-       * lisp.h: Say "vectorlike header" rather than "vector header.
-       (struct vectorlike_header): Rename from struct vector_header.
-       (XVECTORLIKE_HEADER_SIZE): Renamed from XVECTOR_HEADER_SIZE.
-       All uses changed.
-
        lisp.h: Fix a problem with aliasing and vector headers.
        GCC 4.6.0 optimizes based on type-based alias analysis.  For
        example, if b is of type struct buffer * and v of type struct
@@ -18,36 +8,32 @@
        v->size;" must therefore return 1.  This assumption is incorrect
        for Emacs, since it type-puns struct Lisp_Vector * with many other
        types.  To fix this problem, this patch adds a new type struct
-       vector_header that documents the constraints on layout of vectors
+       vectorlike_header that documents the constraints on layout of vectors
        and pseudovectors, and helps optimizing compilers not get fooled
        by Emacs's type punning.  It also adds the macros XSETTYPED_PVECTYPE
        XSETTYPED_PSEUDOVECTOR, TYPED_PSEUDOVECTORP, for similar reasons.
-       * lisp.h (XVECTOR_SIZE): New convenience macro.  All previous uses of
-       XVECTOR (foo)->size replaced to use this macro, to avoid the hassle
-       of writing XVECTOR (foo)->header.size.
-       (XVECTOR_HEADER_SIZE): New macro, for use in XSETPSEUDOVECTOR.
-       (XSETTYPED_PVECTYPE): New macro, specifying the name of the size
-       member.
+       * lisp.h (XSETTYPED_PVECTYPE): New macro, specifying the name of
+       the size member.
        (XSETPVECTYPE): Rewrite in terms of new macro.
        (XSETPVECTYPESIZE): New macro, specifying both type and size.
        This is a bit clearer, and further avoids the possibility of
        undesirable aliasing.
        (XSETTYPED_PSEUDOVECTOR): New macro, specifying the size.
-       (XSETPSEUDOVECTOR): Rewrite in terms of XSETTYPED_PSEUDOVECTOR
-       and XVECTOR_HEADER_SIZE.
+       (XSETPSEUDOVECTOR): Rewrite in terms of XSETTYPED_PSEUDOVECTOR.
        (XSETSUBR): Rewrite in terms of XSETTYPED_PSEUDOVECTOR and XSIZE,
        since Lisp_Subr is a special case (no "next" field).
-       (ASIZE): Rewrite in terms of XVECTOR_SIZE.
-       (struct vector_header): New type.
+       (ASIZE): Now uses header.size rather than size.  All
+       previous uses of XVECTOR (foo)->size replaced to use this macro,
+       to avoid the hassle of writing XVECTOR (foo)->header.size.
+       (struct vectorlike_header): New type.
        (TYPED_PSEUDOVECTORP): New macro, also specifying the C type of the
        object, to help avoid aliasing.
        (PSEUDOVECTORP): Rewrite in terms of TYPED_PSEUDOVECTORP.
        (SUBRP): Likewise, since Lisp_Subr is a special case.
-
        * lisp.h (struct Lisp_Vector, struct Lisp_Char_Table):
        (struct Lisp_Sub_Char_Table, struct Lisp_Bool_Vector):
        (struct Lisp_Hash_Table): Combine first two members into a single
-       struct vector_header member.  All uses of "size" and "next" members
+       struct vectorlike_header member.  All uses of "size" and "next" members
        changed to be "header.size" and "header.next".
        * buffer.h (struct buffer): Likewise.
        * font.h (struct font_spec, struct font_entity, struct font): Likewise.