[cfe-dev] Clang-cl disable exceptions/rtti and macro issue
Reid Kleckner
rnk at google.com
Mon May 5 13:20:34 PDT 2014
Clang currently doesn't support exceptions on Windows. What's happening is
that it's trying to generate code for them, and failing when attempting to
build RTTI data for the catch clauses. We need to improve the diagnostic
experience here.
As a workaround, if you aren't using exceptions in your program, you can
pass -D_HAS_EXCEPTIONS=0 to disable use of exceptions in the Visual C++ STL
headers. cl doesn't have a flag to disable exceptions, and so we never
added one to clang-cl.
---
I don't understand your second problem, I'd need a more reduced test case.
On Sun, May 4, 2014 at 6:26 AM, Kim <soldoutseashell at gmail.com> wrote:
> Hi guys,
>
> I have a couple of problems while trying to compile my program using
> Clang-cl. First issue, even passing /GR- and Xclang -fno-rtti I get:
>
> ^
> error: cannot mangle RTTI descriptors for type 'bad_cast' yet
> error: cannot mangle the name of type 'bad_cast' into RTTI descriptors yet
> error: cannot mangle RTTI descriptors for type 'exception' yet
> error: cannot mangle the name of type 'exception' into RTTI descriptors yet
> error: cannot mangle RTTI descriptors for type 'bad_cast' yet
> error: cannot mangle the name of type 'bad_cast' into RTTI descriptors yet
> error: cannot mangle RTTI descriptors for type 'exception' yet
> error: cannot mangle the name of type 'exception' into RTTI descriptors yet
> error: cannot mangle RTTI descriptors for type 'bad_cast' yet
> error: cannot mangle the name of type 'bad_cast' into RTTI descriptors yet
> error: cannot mangle RTTI descriptors for type 'exception' yet
> error: cannot mangle the name of type 'exception' into RTTI descriptors yet
> error: cannot mangle RTTI descriptors for type 'bad_cast' yet
> error: cannot mangle the name of type 'bad_cast' into RTTI descriptors yet
> error: cannot mangle RTTI descriptors for type 'exception' yet
> error: cannot mangle the name of type 'exception' into RTTI descriptors yet
> error: cannot mangle RTTI descriptors for type 'bad_cast' yet
> error: cannot mangle the name of type 'bad_cast' into RTTI descriptors yet
> error: cannot mangle RTTI descriptors for type 'exception' yet
> fatal error: too many errors emitted, stopping now [-ferror-limit=]
> 2 warnings and 20 errors generated.
>
> And I can't find a switch for disabling exceptions.
>
>
>
>
> Second problem (I think I've encountered this before and fixed it with
> -fno-delayed-template-parsing, however it doesn't seem to work on clang-cl
> or the argument has since been removed from clang)
>
>
> In file included from I:\boost_1_55_0\boost/filesystem.hpp:16:
> In file included from I:\boost_1_55_0\boost/filesystem/path.hpp:25:
> In file included from I:\boost_1_55_0\boost/filesystem/path_traits.hpp:22:
> In file included from I:\boost_1_55_0\boost/type_traits/decay.hpp:18:
> In file included from I:\boost_1_55_0\boost/mpl/eval_if.hpp:17:
> I:\boost_1_55_0\boost/mpl/if.hpp(131,1) : error: pasting formed
> 'BOOST_PP_TUPLE_ELEM_E_2(', an invalid preprocessing token
> [-Winvalid-token-paste]
> BOOST_MPL_AUX_NA_SPEC(3, if_)
> ^
> I:\boost_1_55_0\boost/mpl/aux_/na_spec.hpp(161,40) : note: expanded from
> macro 'BOOST_MPL_AUX_NA_SPEC'
> #define BOOST_MPL_AUX_NA_SPEC(i, name) \
> ^
> I:\boost_1_55_0\boost/mpl/aux_/na_spec.hpp(154,47) : note: expanded from
> macro '\
> BOOST_MPL_AUX_NA_SPEC_NO_ETI'
> #define BOOST_MPL_AUX_NA_SPEC_NO_ETI(i, name) \
> ^
> I:\boost_1_55_0\boost/mpl/aux_/na_spec.hpp(65,9) : note: expanded from
> macro '\
> BOOST_MPL_AUX_NA_SPEC_MAIN'
> BOOST_MPL_PP_NESTED_DEF_PARAMS_TAIL(i, typename T, na) \
> ^
> note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0
> to see all)
> I:\boost_1_55_0\boost/preprocessor/tuple/elem.hpp(36,114) : note:
> expanded from macro 'BOOST_PP_TUPLE_ELEM'
> # define BOOST_PP_TUPLE_ELEM(size, n, tuple)
> BOOST_PP_TUPLE_ELEM_I(BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM_, n),
> BOOST_PP_CAT(BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM_E_, size), tuple))
> ^
> I:\boost_1_55_0\boost/preprocessor/cat.hpp(22,32) : note: expanded from
> macro 'BOOST_PP_CAT'
> # define BOOST_PP_CAT(a, b) BOOST_PP_CAT_I(a, b)
> ^
> I:\boost_1_55_0\boost/preprocessor/cat.hpp(31,55) : note: expanded from
> macro 'BOOST_PP_CAT_I'
> # define BOOST_PP_CAT_I(a, b) BOOST_PP_CAT_II(~, a ## b)
> ^
> In file included from C:\Scripta\libs\Root\ScriptaConfig.cpp:1:
> In file included from C:\Scripta\libs\Root/ScriptaConfig.h:2:
> In file included from C:\Scripta\libs\Root/ScriptaLogManager.h:38:
> In file included from C:\Scripta\libs\Root/Utility.h:4:
> In file included from I:\boost_1_55_0\boost/filesystem.hpp:16:
> In file included from I:\boost_1_55_0\boost/filesystem/path.hpp:25:
> In file included from I:\boost_1_55_0\boost/filesystem/path_traits.hpp:22:
> In file included from I:\boost_1_55_0\boost/type_traits/decay.hpp:18:
> In file included from I:\boost_1_55_0\boost/mpl/eval_if.hpp:17:
> I:\boost_1_55_0\boost/mpl/if.hpp(131,1) : error: pasting formed
> 'BOOST_PP_TUPLE_ELEM_1(', an invalid preprocessing token
> [-Winvalid-token-paste]
> I:\boost_1_55_0\boost/mpl/aux_/na_spec.hpp(161,40) : note: expanded from
> macro 'BOOST_MPL_AUX_NA_SPEC'
> #define BOOST_MPL_AUX_NA_SPEC(i, name) \
> ^
> I:\boost_1_55_0\boost/mpl/aux_/na_spec.hpp(154,47) : note: expanded from
> macro '\
> BOOST_MPL_AUX_NA_SPEC_NO_ETI'
> #define BOOST_MPL_AUX_NA_SPEC_NO_ETI(i, name) \
> ^
> I:\boost_1_55_0\boost/mpl/aux_/na_spec.hpp(65,9) : note: expanded from
> macro '\
> BOOST_MPL_AUX_NA_SPEC_MAIN'
> BOOST_MPL_PP_NESTED_DEF_PARAMS_TAIL(i, typename T, na) \
> ^
> note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0
> to see all)
> I:\boost_1_55_0\boost/preprocessor/tuple/elem.hpp(36,53) : note:
> expanded from macro 'BOOST_PP_TUPLE_ELEM'
> # define BOOST_PP_TUPLE_ELEM(size, n, tuple)
> BOOST_PP_TUPLE_ELEM_I(BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM_, n),
> BOOST_PP_CAT(BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM_E_, size), tuple))
> ^
> I:\boost_1_55_0\boost/preprocessor/tuple/elem.hpp(37,48) : note:
> expanded from macro 'BOOST_PP_TUPLE_ELEM_I'
> # define BOOST_PP_TUPLE_ELEM_I(m, args) BOOST_PP_TUPLE_ELEM_II(m,
> args)
> ^
> I:\boost_1_55_0\boost/preprocessor/tuple/elem.hpp(38,64) : note:
> expanded from macro 'BOOST_PP_TUPLE_ELEM_II'
> # define BOOST_PP_TUPLE_ELEM_II(m, args) BOOST_PP_CAT(m ## args,)
> ^
> In file included from C:\Scripta\libs\Root\ScriptaConfig.cpp:1:
> In file included from C:\Scripta\libs\Root/ScriptaConfig.h:2:
> In file included from C:\Scripta\libs\Root/ScriptaLogManager.h:38:
> In file included from C:\Scripta\libs\Root/Utility.h:4:
> In file included from I:\boost_1_55_0\boost/filesystem.hpp:16:
> In file included from I:\boost_1_55_0\boost/filesystem/path.hpp:25:
> In file included from I:\boost_1_55_0\boost/filesystem/path_traits.hpp:22:
> In file included from I:\boost_1_55_0\boost/type_traits/decay.hpp:18:
> In file included from I:\boost_1_55_0\boost/mpl/eval_if.hpp:17:
> I:\boost_1_55_0\boost/mpl/if.hpp(131,1) : error: pasting formed
> 'BOOST_PP_TUPLE_ELEM_E_2(', an invalid preprocessing token
> [-Winvalid-token-paste]
> I:\boost_1_55_0\boost/mpl/aux_/na_spec.hpp(161,40) : note: expanded from
> macro 'BOOST_MPL_AUX_NA_SPEC'
> #define BOOST_MPL_AUX_NA_SPEC(i, name) \
> ^
> I:\boost_1_55_0\boost/mpl/aux_/na_spec.hpp(154,47) : note: expanded from
> macro '\
> BOOST_MPL_AUX_NA_SPEC_NO_ETI'
> #define BOOST_MPL_AUX_NA_SPEC_NO_ETI(i, name) \
> ^
> I:\boost_1_55_0\boost/mpl/aux_/na_spec.hpp(65,9) : note: expanded from
> macro '\
> BOOST_MPL_AUX_NA_SPEC_MAIN'
> BOOST_MPL_PP_NESTED_DEF_PARAMS_TAIL(i, typename T, na) \
> ^
>
> ...and so on...
>
>
> Thanks a lot for your time.
>
>
>
>
>
>
>
> _______________________________________________
> cfe-dev mailing list
> cfe-dev at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/cfe-dev/attachments/20140505/f717021f/attachment.html>
More information about the cfe-dev
mailing list