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[Octave-bug-tracker] [bug #43298] LLVM 3.5.0 cannot resolve the pow(octa


From: anonymous
Subject: [Octave-bug-tracker] [bug #43298] LLVM 3.5.0 cannot resolve the pow(octave_int<int>, octave_Int<int>) function overload
Date: Sat, 11 Oct 2014 17:55:57 +0000
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10) AppleWebKit/600.1.25 (KHTML, like Gecko) Version/8.0 Safari/600.1.25

Follow-up Comment #23, bug #43298 (project octave):

hi john,

thanks for looking at my patch. i am posting it in this bug. will see if i can
close the one in patch tracker.

> but rather than testing for library version numbers, we would prefer feature
tests in the configure script.

so you are suggesting an approach something like this?

0 m4: have another m4 macro (CHECK_FOR_BAD_LIBCXX_POW) which includes a
minimal c++ test which reproduces this issue. if the c++ file fails to
compile, a variable named "BAD_LIBCXX_POW" is defined: 
0 configure.ac: use AM_CONDITION to propagate this variable in the way of
"-DWITH_LIBCXX_POW_WORKAROUND) to related makefiles (i.e. {array, numeric,
operators}/module.mk)
0 liboctave: replace the nasty macro of

#if defined(_LIBCPP_VERSION) && (_LIBCPP_VERSION >= 1101)

with

#ifdef WITH_LIBCXX_POW_WORKAROUND



(file #32255)
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Additional Item Attachment:

File name: clang-libcxx-fix.patch         Size:3 KB


    _______________________________________________________

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  <http://savannah.gnu.org/bugs/?43298>

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