# make
cc -pg  -O2 -pipe -isystem /usr/src/contrib/libcxxrt -nostdinc++   -g -MD  -MF.depend.libelftc_dem_gnu3.po -MTlibelftc_dem_gnu3.po -std=gnu99 -fstack-protector-strong -Wno-pointer-sign -Wno-error=address -Wno-error=array-bounds -Wno-error=attributes -Wno-error=bool-compare -Wno-error=cast-align -Wno-error=clobbered -Wno-error=enum-compare -Wno-error=extra -Wno-error=inline -Wno-error=logical-not-parentheses -Wno-error=strict-aliasing -Wno-error=uninitialized -Wno-error=unused-but-set-variable -Wno-error=unused-function -Wno-error=unused-value -Wno-error=misleading-indentation -Wno-error=nonnull-compare -Wno-error=shift-negative-value -Wno-error=tautological-compare -Wno-error=unused-const-variable -Wno-error=bool-operation -Wno-error=deprecated -Wno-error=expansion-to-defined -Wno-error=format-overflow -Wno-error=format-truncation -Wno-error=implicit-fallthrough -Wno-error=int-in-bool-context -Wno-error=memset-elt-size -Wno-error=noexcept-type -Wno-error=nonnull -Wno-error=pointer-compare -Wno-error=stringop-overflow -Wno-error=aggressive-loop-optimizations -Wno-error=cast-function-type -Wno-error=catch-value -Wno-error=multistatement-macros -Wno-error=restrict -Wno-error=sizeof-pointer-memaccess -Wno-error=stringop-truncation     -c /usr/src/contrib/libcxxrt/libelftc_dem_gnu3.c -o libelftc_dem_gnu3.po
cc1: warning: command line option '-nostdinc++' is valid for C++/ObjC++ but not for C
during RTL pass: expand
/usr/src/contrib/libcxxrt/libelftc_dem_gnu3.c: In function 'decode_fp_to_float128':
/usr/src/contrib/libcxxrt/libelftc_dem_gnu3.c:3539:1: internal compiler error: Segmentation fault
 decode_fp_to_float128(const char *p, size_t len)
 ^~~~~~~~~~~~~~~~~~~~~
no stack trace because unwind library not available
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
*** Error code 1

Stop.
make: stopped in /usr/src/lib/libcxxrt