[patch] fix some warnings

[Andreas Tobler <toa at pop dot agri dot ch>]

Hello,

here another one, please review. It fixes some uninitialized variables 
and ifdef some unused.

ok, for main?

Andreas

2005-03-04  Andreas Tobler  <a.tobler@schweiz.ch>

	* java/lang/dtoa.c (_dtoa_r): Initialize variables ilim, ilim1 and
	spec_case. Initialize pointer mlo.

	* java/lang/strtod.c (_strtod_r): Initialize pointers bb, bd, ds and
	delta.

	* java/lang/e_asin.c (__ieee754_asin): Initialize variable t.

	* java/lang/e_exp.c (__ieee754_exp): Initialize variables hi, lo
	and k.

	* java/lang/e_rem_pio2.c (__ieee754_rem_pio2): Initialize
	uninitialized variable z.

	* gnu/java/net/natPlainDatagramSocketImplPosix.cc (mcastGrp): Ifdef
	possible unused variables.

Index: java/lang/dtoa.c
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/lang/dtoa.c,v
retrieving revision 1.3
diff -u -r1.3 dtoa.c
--- java/lang/dtoa.c	2 Dec 2000 00:28:44 -0000	1.3
+++ java/lang/dtoa.c	4 Mar 2005 19:19:36 -0000
@@ -245,15 +245,16 @@
 		to hold the suppressed trailing zeros.
 	*/
 
-  int bbits, b2, b5, be, dig, i, ieps, ilim, ilim0, ilim1, j, j1, k, k0,
-    k_check, leftright, m2, m5, s2, s5, spec_case, try_quick;
+  int bbits, b2, b5, be, dig, i, ieps, ilim0, j, j1, k, k0,
+    k_check, leftright, m2, m5, s2, s5, try_quick;
+  int ilim = 0, ilim1 = 0, spec_case = 0;
   union double_union d, d2, eps;
   long L;
 #ifndef Sudden_Underflow
   int denorm;
   unsigned long x;
 #endif
-  _Jv_Bigint *b, *b1, *delta, *mlo, *mhi, *S;
+  _Jv_Bigint *b, *b1, *delta, *mlo = NULL, *mhi, *S;
   double ds;
   char *s, *s0;
 
Index: java/lang/strtod.c
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/lang/strtod.c,v
retrieving revision 1.2
diff -u -r1.2 strtod.c
--- java/lang/strtod.c	9 Oct 2001 22:54:25 -0000	1.2
+++ java/lang/strtod.c	4 Mar 2005 19:19:37 -0000
@@ -118,7 +118,7 @@
   unsigned long y, z;
   union double_union rv, rv0;
 
-  _Jv_Bigint *bb, *bb1, *bd, *bd0, *bs, *delta;
+  _Jv_Bigint *bb = NULL, *bb1, *bd = NULL, *bd0, *bs = NULL, *delta = NULL;
   sign = nz0 = nz = 0;
   rv.d = 0.;
   for (s = s00;; s++)
Index: java/lang/e_asin.c
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/lang/e_asin.c,v
retrieving revision 1.2
diff -u -r1.2 e_asin.c
--- java/lang/e_asin.c	24 Jun 1999 20:41:46 -0000	1.2
+++ java/lang/e_asin.c	4 Mar 2005 19:19:37 -0000
@@ -75,7 +75,7 @@
 	double x;
 #endif
 {
-	double t,w,p,q,c,r,s;
+	double t = 0., w, p, q, c, r, s;
 	int32_t hx,ix;
 	GET_HIGH_WORD(hx,x);
 	ix = hx&0x7fffffff;
Index: java/lang/e_exp.c
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/lang/e_exp.c,v
retrieving revision 1.2
diff -u -r1.2 e_exp.c
--- java/lang/e_exp.c	24 Jun 1999 20:05:46 -0000	1.2
+++ java/lang/e_exp.c	4 Mar 2005 19:19:37 -0000
@@ -108,8 +108,8 @@
 	double x;
 #endif
 {
-	double y,hi,lo,c,t;
-	int32_t k,xsb;
+	double y,hi = 0., lo = 0.,c,t;
+	int32_t k = 0, xsb;
 	uint32_t hx;
 
 	GET_HIGH_WORD(hx,x);
Index: java/lang/e_rem_pio2.c
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/lang/e_rem_pio2.c,v
retrieving revision 1.2
diff -u -r1.2 e_rem_pio2.c
--- java/lang/e_rem_pio2.c	24 Jun 1999 20:05:50 -0000	1.2
+++ java/lang/e_rem_pio2.c	4 Mar 2005 19:19:37 -0000
@@ -89,7 +89,7 @@
 	double x,y[];
 #endif
 {
-	double z,w,t,r,fn;
+	double z = 0., w, t, r, fn;
 	double tx[3];
 	int32_t i,j,n,ix,hx;
 	int e0,nx;
Index: gnu/java/net/natPlainDatagramSocketImplPosix.cc
===================================================================
RCS file: /cvs/gcc/gcc/libjava/gnu/java/net/natPlainDatagramSocketImplPosix.cc,v
retrieving revision 1.8
diff -u -r1.8 natPlainDatagramSocketImplPosix.cc
--- gnu/java/net/natPlainDatagramSocketImplPosix.cc	1 Feb 2005 19:22:47 -0000	1.8
+++ gnu/java/net/natPlainDatagramSocketImplPosix.cc	4 Mar 2005 19:19:38 -0000
@@ -429,9 +429,12 @@
 {
   // FIXME: implement use of NetworkInterface
 
+#if HAVE_STRUCT_IP_MREQ || HAVE_STRUCT_IPV6_MREQ
   union McastReq u;
-  jbyteArray haddress = inetaddr->addr;
   jbyte *bytes = elements (haddress);
+#endif
+  jbyteArray haddress = inetaddr->addr;
+  
   int len = haddress->length;
   int level, opname;
   const char *ptr;