Optimize pure C strings initialization.

* lisp.h (make_pure_string): Fix prototype.
(build_pure_c_string): New function, defined as static inline.  This
provides a better opportunity to optimize away calls to strlen when
the function is called with compile-time constant argument.
* alloc.c (make_pure_c_string): Fix comment.  Change to add nchars
argument, adjust users accordingly.  Use build_pure_c_string where
appropriate.
* buffer.c, coding.c, data.c, dbusbind.c, fileio.c, fontset.c, frame.c,
* keyboard.c, keymap.c, lread.c, search.c, syntax.c, w32fns.c, xdisp.c,
* xfaces.c, xfns.c, xterm.c: Use build_pure_c_string where appropriate.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/syntax.c b/src/syntax.c
index de1ab2a7516..69c2789ed39 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -3475,7 +3475,7 @@ syms_of_syntax (void)
   Fput (Qscan_error, Qerror_conditions,
         pure_cons (Qscan_error, pure_cons (Qerror, Qnil)));
   Fput (Qscan_error, Qerror_message,
-        make_pure_c_string ("Scan error"));
+        build_pure_c_string ("Scan error"));
 
   DEFVAR_BOOL ("parse-sexp-ignore-comments", parse_sexp_ignore_comments,
                doc: /* Non-nil means `forward-sexp', etc., should treat comments as whitespace.  */);