Please list a few sources , links etc for information on Abstract Syntax Tree representation. I am trying to understand the dump generated by -fdump-tree-original-raw and any pointers to what the AST generated .t02.original is ,what do the various words in the output mean , will be helpful. TIA. Darthrader -- View this message in context: http://www.nabble.com/AST---Help-t1052412.html#a2736508 Sent from the gcc - Help forum at Nabble.com.