10303118b3
2007-12-19 Bob Duff <duff@adacore.com> * atree.ads, atree.adb (Traverse_Func): Walk Field2 last, and eliminate the resulting tail recursion by hand. This prevents running out of memory on deeply nested concatenations, since Field2 is where the left operand of concatenations is stored. Fix bug (was returning OK_Orig in some cases). Fix return subtype to clarify that it can only return OK or Abandon. * sem_res.adb (Resolve_Op_Concat): Replace the recursion on the left operand by iteration, in order to avoid running out of memory on deeply-nested concatenations. Use the Parent pointer to get back up the tree. (Resolve_Op_Concat_Arg, Resolve_Op_Concat_First, Resolve_Op_Concat_Rest): New procedures split out of Resolve_Op_Concat, so the iterative algorithm in Resolve_Op_Concat is clearer. * checks.adb (Remove_Checks): Use Traverse_Proc instead of Traverse_Func, because the former already takes care of discarding the result. * errout.adb (First_Node): Use Traverse_Proc instead of Traverse_Func, because the former already takes care of discarding the result. (Remove_Warning_Messages): Use appropriate subtype for Status and Discard From-SVN: r131070 |
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