This one may be a false positive, I'm not sure.  If it is, I'll happily mark
it that way at the coverity site.


2098 	static VALUE
2099 	rb_ary_fill(int argc, VALUE *argv, VALUE ary)
2100 	{
2101 	    VALUE item, arg1, arg2;

Event var_decl: Declared variable "beg" without initializer
Also see events: [uninit_use]

2102 	    long beg, end, len;
2103 	    VALUE *p, *pend;
2104 	    int block_p = Qfalse;
2105 	

At conditional (1): "rb_block_given_p != 0" taking false path

2106 	    if (rb_block_given_p()) {
2107 		block_p = Qtrue;
2108 		rb_scan_args(argc, argv, "02", &arg1, &arg2);
2109 		argc += 1;		/* hackish */
2110 	    }
2111 	    else {
2112 		rb_scan_args(argc, argv, "12", &item, &arg1, &arg2);
2113 	    }
2114 	    switch (argc) {
2115 	      case 1:
2116 		beg = 0;
2117 		len = RARRAY(ary)->len;
2118 		break;
2119 	      case 2:
2120 		if (rb_range_beg_len(arg1, &beg, &len, RARRAY(ary)->len, 1)) {
2121 		    break;
2122 		}
2123 		/* fall through */
2124 	      case 3:
2125 		beg = NIL_P(arg1) ? 0 : NUM2LONG(arg1);
2126 		if (beg < 0) {
2127 		    beg = RARRAY(ary)->len + beg;
2128 		    if (beg < 0) beg = 0;
2129 		}
2130 		len = NIL_P(arg2) ? RARRAY(ary)->len - beg : NUM2LONG(arg2);
2131 		break;
2132 	    }

At conditional (2): "ary" taking true path

2133 	    rb_ary_modify(ary);

Event uninit_use: Using uninitialized value "beg"
Also see events: [var_decl]

2134 	    end = beg + len;
2135 	    if (end > RARRAY(ary)->len) {
2136 		if (end >= RARRAY(ary)->aux.capa) {
2137 		    REALLOC_N(RARRAY(ary)->ptr, VALUE, end);
2138 		    RARRAY(ary)->aux.capa = end;
2139 		}
2140 		rb_mem_clear(RARRAY(ary)->ptr + RARRAY(ary)->len, end -
RARRAY(ary)->len);
2141 		RARRAY(ary)->len = end;
2142 	    }
2143 	
2144 	    if (block_p) {
2145 		VALUE v;
2146 		long i;
2147 	
2148 		for (i=beg; i<end; i++) {
2149 		    v = rb_yield(LONG2NUM(i));
2150 		    if (i>=RARRAY(ary)->len) break;
2151 		    RARRAY(ary)->ptr[i] = v;
2152 		}
2153 	    }
2154 	    else {
2155 		p = RARRAY(ary)->ptr + beg;
2156 		pend = p + len;
2157 		while (p < pend) {
2158 		    *p++ = item;
2159 		}
2160 	    }
2161 	    return ary;
2162 	}