Optimize pure C strings initialization.

[bpt/emacs.git] / src / data.c

diff --git a/src/data.c b/src/data.c
index ee43b98..4b342c0 100644 (file)
--- a/src/data.c
+++ b/src/data.c
@@ -517,7 +517,7 @@ DEFUN ("setcdr", Fsetcdr, Ssetcdr, 2, 2, 0,
   return newcdr;
 }
 \f
-/* Extract and set components of symbols */
+/* Extract and set components of symbols.  */
 
 DEFUN ("boundp", Fboundp, Sboundp, 1, 1, 0,
        doc: /* Return t if SYMBOL's value is not void.  */)
@@ -1463,8 +1463,7 @@ union Lisp_Val_Fwd
 static struct Lisp_Buffer_Local_Value *
 make_blv (struct Lisp_Symbol *sym, int forwarded, union Lisp_Val_Fwd valcontents)
 {
-  struct Lisp_Buffer_Local_Value *blv
-    = xmalloc (sizeof (struct Lisp_Buffer_Local_Value));
+  struct Lisp_Buffer_Local_Value *blv = xmalloc (sizeof *blv);
   Lisp_Object symbol;
   Lisp_Object tem;
 
@@ -2449,20 +2448,17 @@ Uses a minus sign if negative.
 NUMBER may be an integer or a floating point number.  */)
   (Lisp_Object number)
 {
-  char buffer[VALBITS];
+  char buffer[max (FLOAT_TO_STRING_BUFSIZE, INT_BUFSIZE_BOUND (EMACS_INT))];
+  int len;
 
   CHECK_NUMBER_OR_FLOAT (number);
 
   if (FLOATP (number))
-    {
-      char pigbuf[FLOAT_TO_STRING_BUFSIZE];
-
-      float_to_string (pigbuf, XFLOAT_DATA (number));
-      return build_string (pigbuf);
-    }
+    len = float_to_string (buffer, XFLOAT_DATA (number));
+  else
+    len = sprintf (buffer, "%"pI"d", XINT (number));
 
-  sprintf (buffer, "%"pI"d", XINT (number));
-  return build_string (buffer);
+  return make_unibyte_string (buffer, len);
 }
 
 DEFUN ("string-to-number", Fstring_to_number, Sstring_to_number, 1, 2, 0,
@@ -3015,11 +3011,11 @@ syms_of_data (void)
   Fput (Qerror, Qerror_conditions,
        error_tail);
   Fput (Qerror, Qerror_message,
-       make_pure_c_string ("error"));
+       build_pure_c_string ("error"));
 
 #define PUT_ERROR(sym, tail, msg)                      \
   Fput (sym, Qerror_conditions, pure_cons (sym, tail)); \
-  Fput (sym, Qerror_message, make_pure_c_string (msg))
+  Fput (sym, Qerror_message, build_pure_c_string (msg))
 
   PUT_ERROR (Qquit, Qnil, "Quit");
 
@@ -3046,7 +3042,7 @@ syms_of_data (void)
 
   arith_tail = pure_cons (Qarith_error, error_tail);
   Fput (Qarith_error, Qerror_conditions, arith_tail);
-  Fput (Qarith_error, Qerror_message, make_pure_c_string ("Arithmetic error"));
+  Fput (Qarith_error, Qerror_message, build_pure_c_string ("Arithmetic error"));
 
   PUT_ERROR (Qbeginning_of_buffer, error_tail, "Beginning of buffer");
   PUT_ERROR (Qend_of_buffer, error_tail, "End of buffer");
@@ -3213,9 +3209,8 @@ syms_of_data (void)
 }
 
 #ifndef FORWARD_SIGNAL_TO_MAIN_THREAD
-static void arith_error (int) NO_RETURN;
+_Noreturn
 #endif
-
 static void
 arith_error (int signo)
 {