[Bug c++/89237] New: Partial specialization incorrectly marked as ambiguous
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89237 Bug ID: 89237 Summary: Partial specialization incorrectly marked as ambiguous Product: gcc Version: 8.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: delrieutheo at gmail dot com Target Milestone: --- Created attachment 45628 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45628=edit Incorrectly marked ambiguous partial specialization Hello, There seems to be a bug in GCC's template partial ordering, the attached code works with clang 3.8 up to latest trunk version, but fails with GCC 5 and 8 (I have not tested other versions). Here is the output of gcc -v: Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper OFFLOAD_TARGET_NAMES=nvptx-none OFFLOAD_TARGET_DEFAULT=1 Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 8.2.0-17' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 8.2.1 20190204 (Debian 8.2.0-17)
[Bug c++/87282] Invalid use of 'void', in unevaluated context
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87282 --- Comment #1 from delrieutheo at gmail dot com --- Note that it fails with operator-=(void*, void*) as well.
[Bug c++/87282] New: Invalid use of 'void', in unevaluated context
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87282 Bug ID: 87282 Summary: Invalid use of 'void', in unevaluated context Product: gcc Version: 8.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: delrieutheo at gmail dot com Target Milestone: --- Created attachment 44678 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44678=edit void pointers substraction bug Hello, I've been playing around with the detected idiom lately, and I stumbled across a bug in GCC 8.2.0, when substracting two void* in an unevaluated context. Adding those two void* works as expected (as shown in the attachment). The attachment compiles with Clang 5.0.2.
[Bug libstdc++/66855] New: codecvt wrong endianness in UTF-16 conversions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66855 Bug ID: 66855 Summary: codecvt wrong endianness in UTF-16 conversions Product: gcc Version: 5.1.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: delrieutheo at gmail dot com Target Milestone: --- Created attachment 35965 -- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35965action=edit The buggy one There is a problem with codecvt, the facet codecvt_utf8_utf16 should do big-endian conversions with default template arguments. However this is the output I get linking with libstdc++-5.1.1 : UTF-16 [b098] [b294] [d0dc] [c624] UTF-16 to UTF-8 [eb] [82] [98] [eb] [8a] [94] [ed] [83] [9c] [ec] [98] [a4] Converting back to UTF-16 [98b0] [94b2] [dcd0] [24c6] The same code gives the expected result on OS X with libc++ and on Windows. When I specify the third template argument of codecvt_utf8_utf16 with std::little_endian, it gives the expected output.
