Modernise yyerror

Newer versions of bison emit a prototype for yyerror
	void yyerror (const char *);
This clashes with some of our old code that declares yyerror to return
an int.  Fix that in most cases by modernizing yyerror.  bfin-parse.y
uses the return value all over the place, so for there disable
generation of the prototype as specified by posix.

binutils/
	* arparse.y (yyerror): Return void.
	* dlltool.c (yyerror): Likewise.
	* dlltool.h (yyerror): Likewise.
	* sysinfo.y (yyerror): Likewise.
	* windmc.h (yyerror): Likewise.
	* mclex.c (mc_error): Extract from ..
	(yyerror): ..here, both now returning void.
gas/
	* config/bfin-parse.y (yyerror): Define.
	(yyerror): Make static.
	* itbl-parse.y (yyerror): Return void.
ld/
	* deffilep.y (def_error): Return void.

2 files changed, 7 insertions, 5 deletions

diff --git a/gas/config/bfin-parse.y b/gas/config/bfin-parse.y
index 980cf98..5b93d4a 100644
--- a/gas/config/bfin-parse.y
+++ b/gas/config/bfin-parse.y
@@ -25,6 +25,10 @@
 #include "elf/common.h"
 #include "elf/bfin.h"
 
+/* This file uses an old-style yyerror returning int.  Disable
+   generation of a modern prototype for yyerror.  */
+#define yyerror yyerror
+
 #define DSP32ALU(aopcde, HL, dst1, dst0, src0, src1, s, x, aop) \
 	bfin_gen_dsp32alu (HL, aopcde, aop, s, x, dst0, dst1, src0, src1)
 
@@ -160,7 +164,6 @@ static Expr_Node *unary  (Expr_Op_Type, Expr_Node *);
 static void notethat (const char *, ...);
 
 extern char *yytext;
-int yyerror (const char *);
 
 /* Used to set SRCx fields to all 1s as described in the PRM.  */
 static Register reg7 = {REG_R7, 0};
@@ -177,7 +180,7 @@ void error (const char *format, ...)
     as_bad ("%s", buffer);
 }
 
-int
+static int
 yyerror (const char *msg)
 {
   if (msg[0] == '\0')
diff --git a/gas/itbl-parse.y b/gas/itbl-parse.y
index c06b4a8..7f56c73 100644
--- a/gas/itbl-parse.y
+++ b/gas/itbl-parse.y
@@ -274,7 +274,7 @@ FIXME! hex is ambiguous with any digit
 
 static int sbit, ebit;
 static struct itbl_entry *insn=0;
-static int yyerror (const char *);
+static void yyerror (const char *);
 
 %}
 
@@ -449,9 +449,8 @@ value:
 	;
 %%
 
-static int
+static void
 yyerror (const char *msg)
 {
   printf ("line %d: %s\n", insntbl_line, msg);
-  return 0;
 }