Argh, the glibc folks broke their string.h and wchar.h prototypes in this commit:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8e2e833ac4d6509b152d6b8d74d388725717c56f On Thu, Feb 11, 2016 at 11:02 AM, Ismail Donmez <ism...@i10z.com> wrote: > Hi, > > On Wed, Feb 10, 2016 at 2:59 AM, Richard Smith via cfe-commits > <cfe-commits@lists.llvm.org> wrote: >> Author: rsmith >> Date: Tue Feb 9 18:59:02 2016 >> New Revision: 260337 >> >> URL: http://llvm.org/viewvc/llvm-project?rev=260337&view=rev >> Log: >> Fix overload sets of strchr, strpbrk, strrchr, memchr and strstr from >> <string.h> and wcschr, wcspbrk, wcsrchr, wmemchr, and wcsstr from <wchar.h> >> to >> provide a const-correct overload set even when the underlying C library does >> not. >> >> This change adds a new macro, _LIBCPP_PREFERRED_OVERLOAD, which (if defined) >> specifies that a given overload is a better match than an otherwise equally >> good function declaration without the overload. This is implemented in modern >> versions of Clang via __attribute__((enable_if)), and not elsewhere. >> >> We use this new macro to define overloads in the global namespace for these >> functions that displace the overloads provided by the C library, unless we >> believe the C library is already providing the correct signatures. >> >> Added: >> libcxx/trunk/include/string.h >> - copied, changed from r251642, libcxx/trunk/include/string.h >> Modified: >> libcxx/trunk/include/__config >> libcxx/trunk/include/cstring >> libcxx/trunk/include/cwchar >> libcxx/trunk/include/wchar.h >> libcxx/trunk/test/std/depr/depr.c.headers/string_h.pass.cpp >> libcxx/trunk/test/std/depr/depr.c.headers/wchar_h.pass.cpp >> libcxx/trunk/test/std/strings/c.strings/cstring.pass.cpp >> libcxx/trunk/test/std/strings/c.strings/cwchar.pass.cpp > > Fails on Linux x86-64 with glibc 2.22: > > /home/abuild/rpmbuild/BUILD/llvm/projects/libcxx/test/std/depr/depr.c.headers/string_h.pass.cpp:55:5: > error: static_assert failed "" > static_assert((std::is_same<decltype(strchr(cpc, 0)), const > char*>::value), ""); > ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /home/abuild/rpmbuild/BUILD/llvm/projects/libcxx/test/std/depr/depr.c.headers/string_h.pass.cpp:56:5: > error: static_assert failed "" > static_assert((std::is_same<decltype(strpbrk(cpc, cpc)), const > char*>::value), ""); > ^ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /home/abuild/rpmbuild/BUILD/llvm/projects/libcxx/test/std/depr/depr.c.headers/string_h.pass.cpp:57:5: > error: static_assert failed "" > static_assert((std::is_same<decltype(strrchr(cpc, 0)), const > char*>::value), ""); > ^ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /home/abuild/rpmbuild/BUILD/llvm/projects/libcxx/test/std/depr/depr.c.headers/string_h.pass.cpp:58:5: > error: static_assert failed "" > static_assert((std::is_same<decltype(strstr(cpc, cpc)), const > char*>::value), ""); > ^ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /home/abuild/rpmbuild/BUILD/llvm/projects/libcxx/test/std/depr/depr.c.headers/string_h.pass.cpp:59:5: > error: static_assert failed "" > static_assert((std::is_same<decltype(memchr(vpc, 0, s)), const > void*>::value), ""); > ^ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 5 errors generated. > > > /home/abuild/rpmbuild/BUILD/llvm/projects/libcxx/test/std/strings/c.strings/cstring.pass.cpp:55:5: > error: static_assert failed "" > static_assert((std::is_same<decltype(std::memchr(vpc, 0, s)), > const void*>::value), ""); > ^ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /home/abuild/rpmbuild/BUILD/llvm/projects/libcxx/test/std/strings/c.strings/cstring.pass.cpp:56:5: > error: static_assert failed "" > static_assert((std::is_same<decltype(std::strchr(cpc, 0)), const > char*>::value), ""); > ^ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /home/abuild/rpmbuild/BUILD/llvm/projects/libcxx/test/std/strings/c.strings/cstring.pass.cpp:57:5: > error: static_assert failed "" > static_assert((std::is_same<decltype(std::strpbrk(cpc, cpc)), > const char*>::value), ""); > ^ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /home/abuild/rpmbuild/BUILD/llvm/projects/libcxx/test/std/strings/c.strings/cstring.pass.cpp:58:5: > error: static_assert failed "" > static_assert((std::is_same<decltype(std::strrchr(cpc, 0)), const > char*>::value), ""); > ^ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /home/abuild/rpmbuild/BUILD/llvm/projects/libcxx/test/std/strings/c.strings/cstring.pass.cpp:59:5: > error: static_assert failed "" > static_assert((std::is_same<decltype(std::strstr(cpc, cpc)), const > char*>::value), ""); > ^ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 5 errors generated. _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
