Hi,
a friend of mine reported the same problem some days ago.
It looks like the clang compiler (or the standard library to be more
precise) tries to convert a integer literal to a char_type. The
char_type is cxxtools::Char, which represents a unicode character.
Some time ago I reworked the cxxtools::Char since I felt, the
conversions are to lax. I feel, that it should not be allowed to write
something like:
cxxtools::Char ch;
ch = 17;
It is much better to make it explicit:
cxxtools::Char ch;
ch = cxxtools::Char(17);
Hence I made the constructor cxxtools::Char::Char(int32_t) explicit
(among other changes).
But here OSX fails, since it tries to do exactly that:
/usr/bin/../lib/c++/v1/locale:1402:15: error:
conversion from 'int' to 'char_type' (aka 'cxxtools::Char') is ambiguous
char_type __thousands_sep = 0;
It should be:
/usr/bin/../lib/c++/v1/locale:1402:15: error:
conversion from 'int' to 'char_type' (aka 'cxxtools::Char') is ambiguous
char_type __thousands_sep =*char_type(*0*)*;
I don't really know, what is the best way to solve it. I like the
strictness of cxxtools::Char. I feel, that it is a bug in the standard
library of OSX.
The possible solutions I see are:
* remove explicit from cxxtools::Char::Char(int)
* do nothing but report the OS X people (or clang people) the bug
* make a configure check and make explicit where possible
Any opinions?
Tommi
Am 03.11.2013 09:09, schrieb Dmitry Dneprov:
I have upgraded my mac to OS X 10.9 and Xcode to latest version.
After upgrade cxxtools does not compile.
Darwin Kernel Version 13.0.0
x86_64
gcc --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr
--with-gxx-include-
dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform
/Developer/SDKs/MacOSX10.9.sdk/usr/include/c++/4.2.1
Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
Target: x86_64-apple-darwin13.0.0
Thread model: posix
/bin/sh ../libtool --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H -I. -I../src
-I../include -I../include -Wno-long-long -Wall -pedantic -g -O2
-MT base64codec.lo -MD -MP -MF
.deps/base64codec.Tpo -c -o base64codec.lo base64codec.cpp
libtool: compile: g++ -DHAVE_CONFIG_H -I. -I../src -I../include -I../include
-Wno-long-long -Wall -pedantic -g -O2 -MT base64codec.lo -MD -MP -MF
.deps/base64codec.Tpo -c
base64codec.cpp -fno-common -DPIC -o .libs/base64codec.o
In file included from base64codec.cpp:29:
In file included from ../include/cxxtools/base64codec.h:32:
In file included from ../include/cxxtools/textcodec.h:32:
In file included from ../include/cxxtools/char.h:414:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
/usr/bin/../lib/c++/v1/locale:1402:15: error:
conversion from 'int' to 'char_type' (aka 'cxxtools::Char') is ambiguous
char_type __thousands_sep = 0;
^ ~
../include/cxxtools/facets.h:93:61: note: in instantiation of member function
'std::__1::num_get<cxxtools::Char,
std::__1::istreambuf_iterator<cxxtools::Char, std::__1::
char_traits<cxxtools::Char> > >::do_get' requested here
std::locale::global( std::locale(std::locale(),
new std::num_get<cxxtools::Char>) );
^
../include/cxxtools/char.h:76:13: note: candidate constructor
Char(char ch)
^
../include/cxxtools/char.h:81:13: note: candidate constructor
Char(unsigned char ch)
^
../include/cxxtools/char.h:86:13: note: candidate constructor
Char(wchar_t ch)
^
1 error generated.
make[2]: *** [base64codec.lo] Error 1
make[1]: *** [all] Error 2
make: *** [all-recursive] Error 1
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paper to learn more about secure code signing practices that can help keep
Android apps secure.
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