Re: Json Lexer - ParsedJsonDataSet
Posted: Thu Mar 25, 2021 1:36 pm
I agree and with all this, but doesn't this: "JsonOutObject.PrintObjectToBuffer(packJSON, sizeof(packJSON));" fill the buffer beyond the actual string that was packed?The number in PrintObjectTobuffer is the MAX size that it is allowed to use.
So we start with:
char packJSON[1000];
you then do memset..
memset(packJSON,'\n',sizeof(packJSON));
you fill the 1000 bytes with \n....
what will strlen(packJSON) return?
strlen starts at the beginning of packJSON and moves forward till it finds a null.
we filled All of packJSON with \n so strlen won't find a 0 there...
it will walk off the end of packJSON into other memory looking for the null...
it may never find one...in which case it will eventually trap.....
what were 100% sure of is it won't return 1000....>