https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79915
--- Comment #1 from Jan Smets <jan.smets at nokia dot com> --- Sorry, copy/pasted incorrect libtool compile, it's the one of libstdc++-v3/src/c++98/strstream.cc Also, occurs at any optimisation level. libtool: compile: /jasmets/git/tools/toolchains/gcc6/gcc-builddir/./gcc/xgcc -shared-libgcc -B/jasmets/git/tools/toolchains/gcc6/gcc-builddir/./gcc -nostdinc++ -L/jasm ets/git/tools/toolchains/gcc6/gcc-builddir/mips-wrs-vxworks/64/long-calls/O0/libstdc++-v3/src -L/jasmets/git/tools/toolchains/gcc6/gcc-builddir/mips-wrs-vxworks/64/long -calls/O0/libstdc++-v3/src/.libs -L/jasmets/git/tools/toolchains/gcc6/gcc-builddir/mips-wrs-vxworks/64/long-calls/O0/libstdc++-v3/libsupc++/.libs -B/jasmets/git/tools/t oolchains/gcc6/prefix/mips-wrs-vxworks/bin/ -B/jasmets/git/tools/toolchains/gcc6/prefix/mips-wrs-vxworks/lib/ -isystem /jasmets/git/tools/toolchains/gcc6/prefix/mips-wr s-vxworks/include -isystem /jasmets/git/tools/toolchains/gcc6/prefix/mips-wrs-vxworks/sys-include -mabi=64 -mlong-calls -O0 -I/jasmets/git/tools/toolchains/gcc6/gcc-bui lddir/gcc-6.3.1/libstdc++-v3/../libgcc -I/jasmets/git/tools/toolchains/gcc6/gcc-builddir/mips-wrs-vxworks/64/long-calls/O0/libstdc++-v3/include/mips-wrs-vxworks -I/jasm ets/git/tools/toolchains/gcc6/gcc-builddir/mips-wrs-vxworks/64/long-calls/O0/libstdc++-v3/include -I/jasmets/git/tools/toolchains/gcc6/gcc-builddir/gcc-6.3.1/libstdc++- v3/libsupc++ -std=gnu++98 -fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi -fdiagnostics-show-location=once -ffunction-sections -fdata-sections - frandom-seed=strstream.lo -O2 -fno-optimize-sibling-calls -fno-partial-inlining -fasynchronous-unwind-tables -mabi=64 -mlong-calls -O0 -I/jasmets/git/tools/toolchains/g cc6/gcc-builddir/mips-wrs-vxworks/64/long-calls/O0/libstdc++-v3/include/backward -Wno-deprecated -c ../../../../../../.././gcc-6.3.1/libstdc++-v3/src/c++98/strstream.cc -o strstream.o
