Build failure with latest ICU 64.1

[Stephan Bergmann]

On 29/03/2019 11:14, Andreas Sturmlechner wrote:
> [build CXX] xmlsecurity/source/xmlsec/biginteger.cxx
> S=/var/tmp/portage/app-office/libreoffice-6.2.1.2/work/libreoffice-6.2.1.2 && I=$S/instdir && W=$S/workdir &&  mkdir -p $W/CxxObject/xmlsecurity/source/xmlsec/ $W/Dep/CxxObject/xmlsecurity/source/xmlsec/ && cd /var/tmp/portage/app-office/libreoffice-6.2.1.2/work/libreoffice-6.2.1.2 &&    x86_64-pc-linux-gnu-g++ -DBOOST_ERROR_CODE_HEADER_ONLY -DBOOST_SYSTEM_NO_DEPRECATED -DCPPU_ENV=gcc3 -DLINUX -DNDEBUG -DOSL_DEBUG_LEVEL=0 -DUNIX -DUNX -DX86_64 -D_PTHREADS -D_REENTRANT   -DXMLSEC_NO_XSLT -DXSECXMLSEC_DLLIMPLEMENTATION -DXSECGPG_DLLIMPLEMENTATION  -DSYSTEM_LIBXML  -DSYSTEM_XMLSEC  -DXMLSEC_CRYPTO_NSS  -DSYSTEM_NSS  -DSYSTEM_NSS   -fvisibility=hidden    -Wall -Wno-missing-braces -Wnon-virtual-dtor -Wendif-labels -Wextra -Wundef -Wunreachable-code -Wunused-macros -finput-charset=UTF-8 -fmessage-length=0 -fno-common -pipe  -Wduplicated-cond -Wlogical-op -Wshift-overflow=2 -Wunused-const-variable=1 -Wno-cast-function-type -fvisibility-inlines-hidden -fstack-protector-strong -fPIC -Wshadow -Woverloaded-virtual -std=gnu++2a   -DEXCEPTIONS_ON -fexceptions -fno-enforce-eh-specs -march=native -mtune=native -O2 -pipe   -DLIBO_INTERNAL_ONLY  -c $S/xmlsecurity/source/xmlsec/biginteger.cxx -o $W/CxxObject/xmlsecurity/source/xmlsec/biginteger.o  -I$S/include  -I/usr/lib64/icedtea8/include -I/usr/lib64/icedtea8/include/linux -I$S/config_host  -I$S/xmlsecurity/inc -I$S/xmlsecurity/source/gpg -I$S/xmlsecurity/source/xmlsec -I$W/UnpackedTarball/xmlsec/include  -I$W/CustomTarget/officecfg/registry -I$W/UnoApiHeadersTarget/udkapi/normal -I$W/UnoApiHeadersTarget/offapi/normal -I/usr/include   -I/usr/include/gpgme++   -isystem /usr/include/libxml2   -DXMLSEC_CRYPTO_NSS=1 -D__XMLSEC_FUNCTION__=__func__ -DXMLSEC_NO_SIZE_T -DXMLSEC_NO_AES=1 -DXMLSEC_NO_GOST=1 -DXMLSEC_NO_GOST2012=1 -DXMLSEC_DL_LIBLTDL=1 -isystem /usr/include/xmlsec1 -isystem /usr/include/libxml2 -isystem /usr/include/nss -isystem /usr/include/nspr   -isystem /usr/include/nss -isystem /usr/include/nspr   -isystem /usr/include/nss -isystem /usr/include/nspr
> In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/g++-v8/memory:64,
>                   from /usr/include/unicode/localpointer.h:45,
>                   from /usr/include/unicode/uenum.h:23,
>                   from /usr/include/unicode/ucnv.h:53,
>                   from /usr/include/libxml2/libxml/encoding.h:31,
>                   from /usr/include/libxml2/libxml/parser.h:810,
>                   from /usr/include/libxml2/libxml/globals.h:18,
>                   from /usr/include/libxml2/libxml/threads.h:35,
>                   from /usr/include/libxml2/libxml/xmlmemory.h:218,
>                   from /usr/include/libxml2/libxml/tree.h:1307,

smells like any of the above files is #include'ed from within an extern 
"C" block?

>                   from /usr/include/xmlsec1/xmlsec/base64.h:18,
>                   from /var/tmp/portage/app-office/libreoffice-6.2.1.2/work/libreoffice-6.2.1.2/xmlsecurity/inc/xmlsec-wrapper.h:32,
>                   from /var/tmp/portage/app-office/libreoffice-6.2.1.2/work/libreoffice-6.2.1.2/xmlsecurity/source/xmlsec/biginteger.cxx:23:
> /usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/g++-v8/bits/stl_construct.h:72:3: error: template with C linkage
>     template<typename _T1, typename... _Args>
>     ^~~~~~~~