Improve --without-x GCC pacification

* src/composite.c (autocmp_chars):
* src/conf_post.h (DebPrint) [HAVE_NTGUI && !DebPrint && !EMACSDEBUG]:
Use simpler ((void) 0) for no-op expression returning void.
* src/dispextern.h [HAVE_WINDOW_SYSTEM]:
Include fontset.h, for face_for_char.
(FACE_SUITABLE_FOR_ASCII_CHAR_P, FACE_FOR_CHAR):
Now inline functions instead of macros.  This avoids the need for
all those casts to void.
(FACE_SUITABLE_FOR_ASCII_CHAR_P): Omit 2nd (unused) arg.
All uses changed.
* src/frame.c (Ficonify_frame, Fset_frame_position):
* src/xdisp.c (Fmove_point_visually, show_mouse_face):
* src/xdisp.c (note_mode_line_or_margin_highlight)
(note_mouse_highlight):
Assume HAVE_WINDOW_SYSTEM for simplicity, since the code should
now work either way without generating warnings.
* src/frame.c (display_available) [HAVE_WINDOW_SYSTEM]: New function.
(window_system_available) [HAVE_WINDOW_SYSTEM]: Move to frame.h.
(decode_window_system_frame): Use check_window_system instead of
rolling the code ourself.  Return needed only if HAVE_WINDOW_SYSTEM.
(decode_window_system_frame, check_window_system):
Merge the HAVE_WINDOW_SYSTEM and !HAVE_WINDOW_SYSTEM versions into one.
* src/frame.c (Ficonify_frame, Fset_frame_position):
* src/xdisp.c (show_mouse_face, define_frame_cursor1)
(note_mouse_highlight):
Narrow the scope of the HAVE_WINDOW_SYSTEM #ifdef;
this is a better way to pacify GCC.
* src/xdisp.c (x_set_left_fringe, x_set_right_fringe)
(x_set_right_divider_width, x_set_bottom_divider_width):
* src/xfns.c (x_set_internal_border_width):
Don’t use what are now function calls as lvalues.
* src/frame.h (WINDOW_SYSTEM_RETURN): New macro.
(decode_window_system_frame, check_window_system):
Use it, to avoid the need for duplicate declarations.
(window_system_available): Now an inline function.
(display_available): New decl.
(frame_dimension): New inline function.
(FRAME_FRINGE_COLS, FRAME_LEFT_FRINGE_WIDTH)
(FRAME_RIGHT_FRINGE_WIDTH, FRAME_TOTAL_FRINGE_WIDTH)
(FRAME_INTERNAL_BORDER_WIDTH, FRAME_RIGHT_DIVIDER_WIDTH)
(FRAME_BOTTOM_DIVIDER_WIDTH):
Use it, to avoid the need for duplicate definitions.
Now inline functions instead of macros.
* src/gnutls.c (gnutls_log_function2i): Remove.
* src/gnutls.h (GNUTLS_LOG2i): Use ‘message’ directly.
This avoids complaints about gnutls_log_function2i being defined
and not used on older platforms that do not need to call GNUTLS_LOG2i.
* src/image.c (DefaultDepthOfScreen) [0]: Remove unused macro.
* src/lisp.h (AUTO_STRING_WITH_LEN): Revert change from ‘type id =
expr’ to ‘type id; id = expr’, as this would suppress valid
jump-misses-init diagnostics.  Let’s find a better way to address
the problem.
* src/vm-limit.c (__MALLOC_HOOK_VOLATILE):
Define only if needed.
* src/xdisp.c (handle_single_display_spec):
Simplify fringe_bitmap computation.
(define_frame_cursor1): Do nothing unless in a window system.
All callers changed and simplified.
* src/xfaces.c (realize_default_face):
Use a simpler way to pacify GCC when a return value is not used
on some platforms.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/vm-limit.c b/src/vm-limit.c
index 7eeca3c8250..58e7729186c 100644
--- a/src/vm-limit.c
+++ b/src/vm-limit.c
@@ -54,10 +54,10 @@ char data_start[1] = { 1 };
 #ifdef HAVE_MALLOC_H
 # include <malloc.h>
 #endif
-#ifndef __MALLOC_HOOK_VOLATILE
-# define __MALLOC_HOOK_VOLATILE volatile
-#endif
 #ifndef HAVE_MALLOC_H
+# ifndef __MALLOC_HOOK_VOLATILE
+#  define __MALLOC_HOOK_VOLATILE volatile
+# endif
 extern void *(*__morecore) (ptrdiff_t);
 extern void (*__MALLOC_HOOK_VOLATILE __after_morecore_hook) (void);
 #endif