fta (from Ubuntu) reported a build failure when building v8 with GCC 4.4:...

src/third_party/dtoa/dtoa.c

 /****************************************************************
  *
  * The author of this software is David M. Gay.
  *
  * Copyright (c) 1991, 2000, 2001 by Lucent Technologies.
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose without fee is hereby granted, provided that this entire notice
  * is included in all copies of any software which is or includes a copy
  * or modification of this software and in all copies of the supporting
@@ skipping 1517 matching lines @@
 {
 #ifdef Avoid_Underflow
         int scale;
 #endif
         int bb2, bb5, bbe, bd2, bd5, bbbits, bs2, c, dsign,
                  e, e1, esign, i, j, k, nd, nd0, nf, nz, nz0, sign;
         CONST char *s, *s0, *s1;
         double aadj, aadj1, adj, rv, rv0;
         Long L;
         ULong y, z;
-        Bigint *bb, *bb1, *bd, *bd0, *bs, *delta;
+        Bigint *bb = NULL, *bb1, *bd = NULL, *bd0, *bs = NULL, *delta = NULL;
 #ifdef SET_INEXACT
         int inexact, oldinexact;
 #endif
 #ifdef Honor_FLT_ROUNDS
         int rounding;
 #endif
 #ifdef USE_LOCALE
         CONST char *s2;
 #endif
 
@@ skipping 1766 matching lines @@
         Bfree(b);
         *s = 0;
         *decpt = k + 1;
         if (rve)
                 *rve = s;
         return s0;
         }
 #ifdef __cplusplus
 }
 #endif