winsweet created THRIFT-2879:
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             Summary: TMemoryBuffer: using lua string in wrong way
                 Key: THRIFT-2879
                 URL: https://issues.apache.org/jira/browse/THRIFT-2879
             Project: Thrift
          Issue Type: Bug
          Components: Lua - Library
            Reporter: winsweet


1. 
local val = string.sub(self.buffer, self.rPos, len)
The call string.sub(s,i,j) extracts a piece of the string s, 
from the i-th to the j-th character inclusive. 
In Lua, the first character of a string has index 1.

2.
self.buffer = self.buffer + buf
self.wPos = self.wPos + buf
.. is the string concatenation operator in Lua, not +.



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