Update from libc.

Adjust for portability:
[HAVE_STDLIB_H]: Include stdlib.h.
[HAVE_BP_SYM_H || _LIBC]: Guard inclusion of bp-sym.h.
Undef __memchr, too.
[!weak_alias]: Define __memchr to memchr.

diff --git a/lib/memchr.c b/lib/memchr.c
index 8c3b59c1bbb6092057b7f8f7e13a59831bac6266..4b28e481f88e4789c52e74bf14483b924e38c64e 100644 (file)
--- a/lib/memchr.c
+++ b/lib/memchr.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1993, 1997, 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1991,93,96,97,99,2000 Free Software Foundation, Inc.
    Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
    with help from Dan Sahlin (dan@sics.se) and
    commentary by Jim Blandy (jimb@ai.mit.edu);
@@ -34,11 +34,18 @@ USA.  */
 # define __ptr_t char *
 #endif /* C++ or ANSI C.  */
 
-#if defined (_LIBC)
+#if defined _LIBC
 # include <string.h>
+# include <memcopy.h>
+#else
+# define reg_char char
+#endif
+
+#if HAVE_STDLIB_H || defined _LIBC
+# include <stdlib.h>
 #endif
 
-#if defined (HAVE_LIMITS_H) || defined (_LIBC)
+#if HAVE_LIMITS_H || defined _LIBC
 # include <limits.h>
 #endif
 
@@ -49,21 +56,28 @@ USA.  */
 #endif
 
 #include <sys/types.h>
+#if HAVE_BP_SYM_H || defined _LIBC
+# include <bp-sym.h>
+#else
+# define BP_SYM(sym) sym
+#endif
 
+#undef memchr
+#undef __memchr
 
 /* Search no more than N bytes of S for C.  */
-
 __ptr_t
-memchr (s, c, n)
+__memchr (s, c_in, n)
      const __ptr_t s;
-     int c;
+     int c_in;
      size_t n;
 {
   const unsigned char *char_ptr;
   const unsigned long int *longword_ptr;
   unsigned long int longword, magic_bits, charmask;
+  unsigned reg_char c;
 
-  c = (unsigned char) c;
+  c = (unsigned char) c_in;
 
   /* Handle the first few characters by reading one character at a time.
      Do this until CHAR_PTR is aligned on a longword boundary.  */
@@ -197,3 +211,6 @@ memchr (s, c, n)
 
   return 0;
 }
+#ifdef weak_alias
+weak_alias (__memchr, BP_SYM (memchr))
+#endif