issue #62 if integer[] or number[] local is not initialized then raise error

ravi-tests/ravi_errors.ravi

@@ -54,7 +54,8 @@ checkmessage('local t: integer[] = {}; local x=function() return 0 end; local f=
 checkmessage('local t: integer[] = {}; local x=function() t[1] = 1; local f=function() t = 1 end; f(); end; x()', 'upvalue of integer[] type, cannot be set to non integer[] value')
 checkmessage('local t: integer[] = {false}', 'value cannot be converted to integer')
 checkmessage('local x=function() return "hi" end; local t: integer[] = {x()}', 'value cannot be converted to integer')
-checkmessage('local x=function() return "hi" end; local t: integer[]; t[1] = x()', 'integer expected')
+checkmessage('local x=function() return "hi" end; local t: integer[] = {}; t[1] = x()', 'integer expected')
+checkmessage('local i: integer, t: integer[], j: number', 'uninitialized integer[] local variable')
 
 checkmessage('local t: number[] = {}; local t2: number[] = {1.0}; t=t2[1]', 'Invalid assignment: number[] expected')
 checkmessage('local t: number[] = {}; t=1', 'Invalid assignment: number[] expected')
@@ -69,4 +70,5 @@ checkmessage('local t: number[] = {}; local x=function() return 0 end; local f=f
 checkmessage('local t: number[] = {}; local x=function() t[1] = 1; local f=function() t = 1 end; f(); end; x()', 'upvalue of number[] type, cannot be set to non number[] value')
 checkmessage('local t: number[] = {false}', 'value cannot be converted to number')
 checkmessage('local x=function() return "hi" end; local t: number[] = {x()}', 'value cannot be converted to number')
-checkmessage('local x=function() return "hi" end; local t: number[]; t[1] = x()', 'number expected')
+checkmessage('local x=function() return "hi" end; local t: number[] = {}; t[1] = x()', 'number expected')
+checkmessage('local i: integer, t: number[], j: number', 'uninitialized number[] local variable')

src/lparser.c

@@ -581,6 +581,10 @@ static void ravi_code_setzero(FuncState *fs, int reg, ravitype_t ravi_type) {
   if (ravi_type == RAVI_TNUMFLT || ravi_type == RAVI_TNUMINT)
     /* code an instruction to convert in place */
     luaK_codeABC(fs, ravi_type == RAVI_TNUMFLT ? OP_RAVI_LOADFZ : OP_RAVI_LOADIZ, reg, 0, 0);
+  else if (ravi_type == RAVI_TARRAYFLT)
+    luaX_syntaxerror(fs->ls, "uninitialized number[] local variable");
+  else if (ravi_type == RAVI_TARRAYINT)
+    luaX_syntaxerror(fs->ls, "uninitialized integer[] local variable");
 }