create table statement with large varchar column results in a parser error

[Suresh Subbiah]

create table temp2(a varchar(20) not null, b varchar(512) not null, primary key(b)) salt using 16 partitions;

*** ERROR[15001] A syntax error occurred at or before:
CAST ( _ISO88591';
                 ^ (19 characters from start of SQL statement)

This issue has been fixed in a side thread and needs to be ported. Internal clauses generated and sent to the parser and there is logic that attempts to save memory and resize if memory needed is more than 512 bytes. An error in that resize logic is causing this problem.