https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66030
Bug ID: 66030
Summary: [5.1.0] std::codecvt_byname missing from libstdc++ DLL
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: sailer at sailer dot dynip.lugs.ch
Target Milestone: ---
Created attachment 35470
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35470&action=edit
testcase
Compiling the attached simple test case fails linking for mingw32, because
libstdc++ DLL misses codecvt_byname symbols. This test case works with mingw32
gcc 4.9.2.
$ i686-w64-mingw32-g++ -o x.exe x.c
/tmp/ccIXAXf0.o:x.c:(.text+0x74): undefined reference to
`std::codecvt_byname<wchar_t, char, int>::codecvt_byname(char const*, unsigned
int)'
collect2: error: ld returned 1 exit status
$ i686-w64-mingw32-gcc -v
Using built-in specs.
COLLECT_GCC=i686-w64-mingw32-gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-w64-mingw32/5.1.0/lto-wrapper
Target: i686-w64-mingw32
Configured with: ../configure --prefix=/usr --bindir=/usr/bin
--includedir=/usr/include --mandir=/usr/share/man --infodir=/usr/share/info
--datadir=/usr/share --build=x86_64-redhat-linux-gnu
--host=x86_64-redhat-linux-gnu --with-gnu-as --with-gnu-ld --verbose
--without-newlib --disable-multilib --disable-plugin --with-system-zlib
--disable-nls --without-included-gettext --disable-win32-registry
--enable-languages=c,c++,objc,obj-c++,fortran
--with-bugurl=http://bugzilla.redhat.com/bugzilla --with-cloog
--enable-threads=posix --enable-libgomp --target=i686-w64-mingw32
--with-sysroot=/usr/i686-w64-mingw32/sys-root
--with-gxx-include-dir=/usr/i686-w64-mingw32/sys-root/mingw/include/c++
Thread model: posix
gcc version 5.1.0 20150422 (Fedora MinGW 5.1.0-1.fc23) (GCC)
