> Before changing the documentation please consider the following improved > implemetation that overcomes ambiguity and access control issues of the > current is_base_and_derived implemetation (I lately posted it to c.l.c++.m)
That's really interesting, but I can't get to work with the compilers I have access to (Borland/gcc), I've attached a modified version that at least compiles with these compilers, but it doesn't produce the correct results: Running 1 test case... Platform: Cygwin Compiler: GNU C++ version 3.2 20020927 (prerelease) STL : GNU libstdc++ version 20020927 Boost : 1.30.0 is_base_and_derived_test.cpp(109): error in "is_base_and_derived": The expression: "(::boost::is_base_and_derived<Derived,Derived>::value)" had an invalid value (found 0, expected 1) is_base_and_derived_test.cpp(110): error in "is_base_and_derived": The expression: "(::boost::is_base_and_derived<Base,Base>::value)" had an invalid value (found 0, expected 1) is_base_and_derived_test.cpp(111): error in "is_base_and_derived": The expression: "(::boost::is_base_and_derived<Base,Derived>::value)" had an invalid value (found 0, expected 1) is_base_and_derived_test.cpp(119): error in "is_base_and_derived": The expression: "(::boost::is_base_and_derived<VB,VD>::value)" had an invalid value (found 0, expected 1) is_base_and_derived_test.cpp(121): error in "is_base_and_derived": The expression: "(::boost::is_base_and_derived<test_abc1,test_abc3>::value)" had an invalid value (found 0, expected 1) Test suite "Type Traits" failed with: 15 assertions out of 20 passed 5 assertions out of 20 failed Test case "is_base_and_derived" failed with: 15 assertions out of 20 passed 5 assertions out of 20 failed Any ideas, or results from other compilers? John Maddock http://ourworld.compuserve.com/homepages/john_maddock/index.htm
is_base_and_derived_test.cpp
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