* 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.

src/ChangeLog

 2011-04-25  Paul Eggert  <eggert@cs.ucla.edu>
 
+	* 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
@@ -33,6 +38,7 @@
 	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

src/buffer.h

@@ -505,7 +505,7 @@ struct buffer
      collect killed buffers properly.
      Note that vectors and most pseudovectors are all on one chain,
      but buffers are on a separate chain of their own.  */
-  struct vector_header header;
+  struct vectorlike_header header;
 
   /* This structure holds the coordinates of the buffer contents
      in ordinary buffers.  In indirect buffers, this is not used.  */

src/font.h

@@ -254,7 +254,7 @@ extern Lisp_Object Qja, Qko;
 
 struct font_spec
 {
-  struct vector_header header;
+  struct vectorlike_header header;
   Lisp_Object props[FONT_SPEC_MAX];
 };
 
@@ -262,7 +262,7 @@ struct font_spec
 
 struct font_entity
 {
-  struct vector_header header;
+  struct vectorlike_header header;
   Lisp_Object props[FONT_ENTITY_MAX];
 };
 
@@ -275,7 +275,7 @@ struct font_entity
 
 struct font
 {
-  struct vector_header header;
+  struct vectorlike_header header;
 
   /* All Lisp_Object components must come first.
      That ensures they are all aligned normally.  */

src/frame.h

@@ -82,7 +82,7 @@ struct font_driver_list;
 
 struct frame
 {
-  struct vector_header header;
+  struct vectorlike_header header;
 
   /* All Lisp_Object components must come first.
      That ensures they are all aligned normally.  */

src/lisp.h

@@ -557,7 +557,8 @@ extern Lisp_Object make_number (EMACS_INT);
 /* Extract the size field of a vector or vector-like object.  */
 
 #define XVECTOR_SIZE(a) (XVECTOR (a)->header.size + 0)
-#define XVECTOR_HEADER_SIZE(a) (((struct vector_header *) XPNTR (a))->size + 0)
+#define XVECTORLIKE_HEADER_SIZE(a) \
+  (((struct vectorlike_header *) XPNTR (a))->size + 0)
 
 /* Misc types.  */
 
@@ -612,7 +613,7 @@ extern Lisp_Object make_number (EMACS_INT);
 #define XSETPVECTYPESIZE(v, code, sizeval) \
   ((v)->header.size = PSEUDOVECTOR_FLAG | (code) | (sizeval))
 #define XSETPSEUDOVECTOR(a, b, code) \
-  XSETTYPED_PSEUDOVECTOR(a, b, XVECTOR_HEADER_SIZE (a), code)
+  XSETTYPED_PSEUDOVECTOR(a, b, XVECTORLIKE_HEADER_SIZE (a), code)
 #define XSETTYPED_PSEUDOVECTOR(a, b, size, code)			\
   (XSETVECTOR (a, b),							\
    eassert ((size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK))		\
@@ -793,7 +794,7 @@ struct Lisp_String
 /* Header of vector-like objects.  This type documents the constraints on
    layout of vectors and pseudovectors, and helps optimizing compilers not get
    fooled by Emacs's type punning.  */
-struct vector_header
+struct vectorlike_header
   {
     EMACS_UINT size;
     union {
@@ -804,7 +805,7 @@ struct vector_header
 
 struct Lisp_Vector
   {
-    struct vector_header header;
+    struct vectorlike_header header;
     Lisp_Object contents[1];
   };
 
@@ -909,7 +910,7 @@ struct Lisp_Char_Table
        pseudovector type information.  It holds the size, too.
        The size counts the defalt, parent, purpose, ascii,
        contents, and extras slots.  */
-    struct vector_header header;
+    struct vectorlike_header header;
 
     /* This holds a default value,
        which is used whenever the value for a specific character is nil.  */
@@ -938,7 +939,7 @@ struct Lisp_Sub_Char_Table
   {
     /* HEADER.SIZE is the vector's size field, which also holds the
        pseudovector type information.  It holds the size, too.  */
-    struct vector_header header;
+    struct vectorlike_header header;
 
     /* Depth of this sub char-table.  It should be 1, 2, or 3.  A sub
        char-table of depth 1 contains 16 elements, and each element
@@ -959,7 +960,7 @@ struct Lisp_Bool_Vector
   {
     /* HEADER.SIZE is the vector's size field.  It doesn't have the real size,
        just the subtype information.  */
-    struct vector_header header;
+    struct vectorlike_header header;
     /* This is the size in bits.  */
     EMACS_UINT size;
     /* This contains the actual bits, packed into bytes.  */
@@ -972,7 +973,7 @@ struct Lisp_Bool_Vector
 
    This type is treated in most respects as a pseudovector,
    but since we never dynamically allocate or free them,
-   we don't need a struct vector_header and its 'next' field.  */
+   we don't need a struct vectorlike_header and its 'next' field.  */
 
 struct Lisp_Subr
   {
@@ -1120,7 +1121,7 @@ struct Lisp_Symbol
 struct Lisp_Hash_Table
 {
   /* This is for Lisp; the hash table code does not refer to it.  */
-  struct vector_header header;
+  struct vectorlike_header header;
 
   /* Function used to compare keys.  */
   Lisp_Object test;
@@ -1652,7 +1653,7 @@ typedef struct {
 
 /* True if object X is a pseudovector whose code is CODE.  */
 #define PSEUDOVECTORP(x, code)					\
-  TYPED_PSEUDOVECTORP(x, vector_header, code)
+  TYPED_PSEUDOVECTORP(x, vectorlike_header, code)
 
 /* True if object X, with internal type struct T *, is a pseudovector whose
    code is CODE.  */

src/process.h

@@ -34,7 +34,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 struct Lisp_Process
   {
-    struct vector_header header;
+    struct vectorlike_header header;
 
     /* Name of subprocess terminal.  */
     Lisp_Object tty_name;

src/termhooks.h

@@ -323,7 +323,7 @@ struct w32_display_info;
 struct terminal
 {
   /* This is for Lisp; the terminal code does not refer to it.  */
-  struct vector_header header;
+  struct vectorlike_header header;
 
   /* Parameter alist of this terminal.  */
   Lisp_Object param_alist;

src/window.c

@@ -5794,7 +5794,7 @@ zero means top of window, negative means relative to bottom of window.  */)
 
 struct save_window_data
   {
-    struct vector_header header;
+    struct vectorlike_header header;
     Lisp_Object selected_frame;
     Lisp_Object current_window;
     Lisp_Object current_buffer;
@@ -5816,7 +5816,7 @@ struct save_window_data
 /* This is saved as a Lisp_Vector  */
 struct saved_window
 {
-  struct vector_header header;
+  struct vectorlike_header header;
   Lisp_Object window;
   Lisp_Object buffer, start, pointm, mark;
   Lisp_Object left_col, top_line, total_cols, total_lines;

src/window.h

@@ -89,7 +89,7 @@ struct cursor_pos
 struct window
   {
     /* This is for Lisp; the terminal code does not refer to it.  */
-    struct vector_header header;
+    struct vectorlike_header header;
 
     /* The frame this window is on.  */
     Lisp_Object frame;