This test is a collection of IDL files that once caused IDL compiler or C++ compiler errors, plus a dummy main.cpp for the build. There is no execution check in this test, the only outcome of interest being the build. The examples in the IDL files come from many sources - some are made from scratch, some are adapted from other tests, and some are adapted from examples sent in by ACE and/or TAO users. To all of these last, many thanks for your help in digging out these bugs! Each IDL file contains examples that are related, either by the IDL type involved or by the context in which the error occurs. As new bugs are uncovered and fixed, new examples will be added to the suite, to ensure that the bugs do not recur. The -GA option has been added to the IDL compiler command line. This option generates the implementations of type codes and Any insertion/extraction operators in a separate file with the extension *A.cpp. These files have been added to the build, to make sure that the option functions correctly for all the IDL types found in this test. If the client or server does not use type codes or Anys, these files may be left out of the compilation. This feature is tested in TAO_ROOT/tests/Hello. The IDL compiler command line options -GC -GH and -Gd have also been added. They switch on generation, respectively, of extra code for Asynchronous Method Invocation (AMI), Asynchronous Method Handling (AMH) and direct collocation of invocations (bypassing the POA and using a simple C++ method call). By adding these options we can test for correct code generation for every IDL interface found in this test. To build the test files, type 'make' at the command line. The TAO IDL compiler will open each IDL file in the directory and generate code that will then be compiled by the C++ compiler on your platform. To run the test, type 'main' at the command line. The generation of correct IOR prefixes in pragma.idl is checked in the body of main(). The rest of the .idl files need only to build cleanly. To test the client/server functionality of the various IDL types and operations, see the test suite in ACE_wrappers/TAO/tests/Param_Test. There are a few negative tests (e.g. invalid_scoping, keyword_case_diff, exception_misuse) where it shall be verified that tao_idl exits with an error status. The main.cpp program cannot be used for them because it only handles positive tests. To this end, run the script run_test.pl.