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The placeholders for std::tr1::bind are defined in an anonymous namespace, which means they have internal linkage. This will cause ODR violations when used in function templates (such as std::tr1::bind) from multiple translation units. Although probably harmless (every definition will generate identical code, even if technically ill-formed) we can avoid the ODR violations by reusing the std::placeholder objects as the std::tr1::placeholder objects. To make this work, the std::_Placeholder type needs to be defined for C++98 mode, so that <tr1/functional> can use it. The members of the std::placeholder namespace must not be defined by <functional> in C++98 mode, because "placeholders", "_1", "_2" etc. are not reserved names in C++98. Instead they can be declared in <tr1/functional>, because those names *are* reserved in that header. With the std::placeholders objects declared, a simple using-directive suffices to redeclare them in namespace std::tr1::placeholders. This means any use of the TR1 placeholders actually refers to the C++11 placeholders, which are defined with external linkage and exported from the library, so don't cause ODR violations. libstdc++-v3/ChangeLog: * include/std/functional (std::_Placeholder): Define for C++98 as well as later standards. * include/tr1/functional (std::placeholders::_1 etc): Declare for C++98. (tr1::_Placeholder): Replace with using-declaration for std::_Placeholder. (tr1::placeholders::_1 etc.): Replace with using-directive for std::placeholders. |
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| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libhsail-rt | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| liboffloadmic | ||
| libphobos | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| ABOUT-NLS | ||
| ar-lib | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| ChangeLog.tree-ssa | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| multilib.am | ||
| README | ||
| symlink-tree | ||
| test-driver | ||
| ylwrap | ||
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.