Hi , Can someone please let me know what the extensions t02 & original mean in the filename test.c.t02.original after compiling test.c using the option fdump-tree-original-raw, generating an AST? Darth -- View this message in context: http://www.nabble.com/What-do-these-mean--t1046908.html#a2720645 Sent from the gcc - Dev forum at Nabble.com.