diff --git a/bison.simple b/bison.simple
index fe702839..c468f2b6 100644
--- a/bison.simple
+++ b/bison.simple
@@ -150,14 +150,14 @@ int yyparse (void);
 #endif
 
 #if __GNUC__ > 1		/* GNU C and GNU C++ define this.  */
-#define __yy_bcopy(FROM,TO,COUNT)	__builtin_memcpy(TO,FROM,COUNT)
+#define __yy_memcpy(FROM,TO,COUNT)	__builtin_memcpy(TO,FROM,COUNT)
 #else				/* not GNU C or C++ */
 #ifndef __cplusplus
 
 /* This is the most reliable way to avoid incompatibilities
    in available built-in functions on various systems.  */
 static void
-__yy_bcopy (from, to, count)
+__yy_memcpy (from, to, count)
      char *from;
      char *to;
      int count;
@@ -175,7 +175,7 @@ __yy_bcopy (from, to, count)
 /* This is the most reliable way to avoid incompatibilities
    in available built-in functions on various systems.  */
 static void
-__yy_bcopy (char *from, char *to, int count)
+__yy_memcpy (char *from, char *to, int count)
 {
   register char *f = from;
   register char *t = to;
@@ -321,12 +321,12 @@ yynewstate:
       if (yystacksize > YYMAXDEPTH)
 	yystacksize = YYMAXDEPTH;
       yyss = (short *) alloca (yystacksize * sizeof (*yyssp));
-      __yy_bcopy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp));
+      __yy_memcpy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp));
       yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp));
-      __yy_bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp));
+      __yy_memcpy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp));
 #ifdef YYLSP_NEEDED
       yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp));
-      __yy_bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp));
+      __yy_memcpy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp));
 #endif
 #endif /* no yyoverflow */
 
diff --git a/src/bison.s1 b/src/bison.s1
index fe702839..c468f2b6 100644
--- a/src/bison.s1
+++ b/src/bison.s1
@@ -150,14 +150,14 @@ int yyparse (void);
 #endif
 
 #if __GNUC__ > 1		/* GNU C and GNU C++ define this.  */
-#define __yy_bcopy(FROM,TO,COUNT)	__builtin_memcpy(TO,FROM,COUNT)
+#define __yy_memcpy(FROM,TO,COUNT)	__builtin_memcpy(TO,FROM,COUNT)
 #else				/* not GNU C or C++ */
 #ifndef __cplusplus
 
 /* This is the most reliable way to avoid incompatibilities
    in available built-in functions on various systems.  */
 static void
-__yy_bcopy (from, to, count)
+__yy_memcpy (from, to, count)
      char *from;
      char *to;
      int count;
@@ -175,7 +175,7 @@ __yy_bcopy (from, to, count)
 /* This is the most reliable way to avoid incompatibilities
    in available built-in functions on various systems.  */
 static void
-__yy_bcopy (char *from, char *to, int count)
+__yy_memcpy (char *from, char *to, int count)
 {
   register char *f = from;
   register char *t = to;
@@ -321,12 +321,12 @@ yynewstate:
       if (yystacksize > YYMAXDEPTH)
 	yystacksize = YYMAXDEPTH;
       yyss = (short *) alloca (yystacksize * sizeof (*yyssp));
-      __yy_bcopy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp));
+      __yy_memcpy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp));
       yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp));
-      __yy_bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp));
+      __yy_memcpy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp));
 #ifdef YYLSP_NEEDED
       yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp));
-      __yy_bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp));
+      __yy_memcpy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp));
 #endif
 #endif /* no yyoverflow */
 
diff --git a/src/bison.simple b/src/bison.simple
index fe702839..c468f2b6 100644
--- a/src/bison.simple
+++ b/src/bison.simple
@@ -150,14 +150,14 @@ int yyparse (void);
 #endif
 
 #if __GNUC__ > 1		/* GNU C and GNU C++ define this.  */
-#define __yy_bcopy(FROM,TO,COUNT)	__builtin_memcpy(TO,FROM,COUNT)
+#define __yy_memcpy(FROM,TO,COUNT)	__builtin_memcpy(TO,FROM,COUNT)
 #else				/* not GNU C or C++ */
 #ifndef __cplusplus
 
 /* This is the most reliable way to avoid incompatibilities
    in available built-in functions on various systems.  */
 static void
-__yy_bcopy (from, to, count)
+__yy_memcpy (from, to, count)
      char *from;
      char *to;
      int count;
@@ -175,7 +175,7 @@ __yy_bcopy (from, to, count)
 /* This is the most reliable way to avoid incompatibilities
    in available built-in functions on various systems.  */
 static void
-__yy_bcopy (char *from, char *to, int count)
+__yy_memcpy (char *from, char *to, int count)
 {
   register char *f = from;
   register char *t = to;
@@ -321,12 +321,12 @@ yynewstate:
       if (yystacksize > YYMAXDEPTH)
 	yystacksize = YYMAXDEPTH;
       yyss = (short *) alloca (yystacksize * sizeof (*yyssp));
-      __yy_bcopy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp));
+      __yy_memcpy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp));
       yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp));
-      __yy_bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp));
+      __yy_memcpy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp));
 #ifdef YYLSP_NEEDED
       yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp));
-      __yy_bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp));
+      __yy_memcpy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp));
 #endif
 #endif /* no yyoverflow */