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Add explanatory comments to 'cray.hpp'

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This commit is contained in:
Justin LaPolla
2017-12-15 08:18:43 -06:00
parent d26ae70b20
commit 3c4ea795d7
1 changed files with 12 additions and 16 deletions
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28
include/boost/config/compiler/cray.hpp
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@ -45,6 +45,11 @@
// Note: 'linkflags=-lrt' is needed in Cray Linux Environment. Otherwise
// you get an 'undefined reference to clock_gettime' error.
//
// Note: If a test '*_fail.cpp' file compiles, but fails to run, then it is
// reported as a defect. However, this is not actually a defect. This is an
// area where the test system is somewhat broken. Tests that are failing
// because of this problem are noted in the comments.
//
// Pay attention to the macro definitions for the macros you wish to
// modify. For example, only macros categorized as compiler macros should
// appear in this file; platform macros should not appear in this file.
@ -271,25 +276,16 @@
// 'BOOST_NO_DEDUCED_TYPENAME' has no effect on which tests are run.
//
// The 'no_ded_typename_pass.cpp' test should always compile and run
// successfully, regardless of the value of 'BOOST_DEDUCED_TYPENAME'.
// 'BOOST_DEDUCED_TYPENAME' must always have an appropriate value; it's not
// just something that you turn on or off.
// successfully, because 'BOOST_DEDUCED_TYPENAME' must always have an
// appropriate value (it's not just something that you turn on or off).
// Therefore, if you wish to test changes to 'BOOST_NO_DEDUCED_TYPENAME',
// you have to modify 'no_ded_typename_pass.cpp' to unconditionally include
// 'boost_no_ded_typename.ipp'.
#undef BOOST_NO_DEDUCED_TYPENAME // This is correct. Test is broken.
// 'BOOST_NO_COMPLETE_VALUE_INITIALIZATION' test is broken.
// 'no_com_value_init_fail.cpp' should pass if one of the following occurs:
//
// - It fails to compile.
// - It fails to run.
//
// The test Jamfile file uses 'compile-fail', but the proper semantics for
// this test is 'compile-or-run-fail'. For the Cray compiler,
// 'no_com_value_init_fail.cpp' compiles, so the test indicates a defect.
// However, if we run the compiled program, it fails at runtime, so this
// really isn't a defect.
#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION // This is correct. Test is broken.
#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION // This is correct. Test compiles, but fails to run.
#undef BOOST_NO_CXX11_ALIGNAS
#undef BOOST_NO_CXX11_HDR_FUNCTIONAL
#define BOOST_NO_CXX11_HDR_REGEX // If defined, then 'no_cxx11_hdr_regex_fail' fails. If undefined, then 'no_cxx11_hdr_regex_pass' fails.
#define BOOST_NO_CXX11_HDR_REGEX // This is correct. Test compiles, but fails to run.
#undef BOOST_NO_CXX11_INLINE_NAMESPACES
#undef BOOST_NO_CXX11_SMART_PTR
#undef BOOST_NO_CXX11_TRAILING_RESULT_TYPES