[Bug bootstrap/66521] xgcc: cc1plus segfaults when compiling libstdc++-v3/src/c++11/ostream-inst.cc

["egall at gwmail dot gwu.edu" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66521

--- Comment #8 from Eric Gallager <egall at gwmail dot gwu.edu> ---
(In reply to Jonathan Wakely from comment #7)
> (In reply to Eric Gallager from comment #5)
> > this one; I think I had to pass the '--disable-libstdcxx-filesystem-ts' flag
> > to configure last time to get past it... I'll open a new PR about it.
> 
> Please do, I'm planning to backport the Filesystem TS for GCC 5.3 so if it
> breaks the bootstrap on darwin I'd like to know the details.

Okay, I've opened Bug 67066 for that. Although, after getting past that one,
I'm back to something that looks at least semi-libvtv-related:

/bin/sh ../libtool --tag CXX   --mode=link
/Users/ericgallager/gcc-git/my_oddly_named_builddir/./gcc/xgcc -shared-libgcc
-B/Users/ericgallager/gcc-git/my_oddly_named_builddir/./gcc -nostdinc++
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/src
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/src/.libs
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/libsupc++/.libs
-B/usr/local/x86_64-apple-darwin10.8.0/bin/
-B/usr/local/x86_64-apple-darwin10.8.0/lib/ -isystem
/usr/local/x86_64-apple-darwin10.8.0/include -isystem
/usr/local/x86_64-apple-darwin10.8.0/sys-include   
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/../libvtv/.libs
-Wl,--rpath
-Wl,/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/../libvtv/.libs
-Wl,-single_module  -std=gnu++98 -fno-common -DPIC -fno-implicit-templates
-fvtable-verify=std -Wl,-u_vtable_map_vars_start,-u_vtable_map_vars_end -Wall
-Wextra -Wwrite-strings -Wcast-qual -Wabi  -fdiagnostics-show-location=once 
-fvisibility-inlines-hidden -ffunction-sections -fdata-sections 
-frandom-seed=libstdc++.la  -o libstdc++.la -version-info 6:22:0
-Wl,-exported_symbols_list,libstdc++-symbols.explist -lm -rpath
/usr/local/lib/gcc/x86_64-apple-darwin10.8.0/6.0.0 compatibility.lo
compatibility-debug_list.lo compatibility-debug_list-2.lo 
compatibility-c++0x.lo compatibility-atomic-c++0x.lo
compatibility-thread-c++0x.lo compatibility-chrono.lo compatibility-condvar.lo 
../libsupc++/libsupc++convenience.la ../src/c++98/libc++98convenience.la
../src/c++11/libc++11convenience.la 
libtool: link:  /Users/ericgallager/gcc-git/my_oddly_named_builddir/./gcc/xgcc
-shared-libgcc -B/Users/ericgallager/gcc-git/my_oddly_named_builddir/./gcc
-nostdinc++
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/src
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/src/.libs
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/libsupc++/.libs
-B/usr/local/x86_64-apple-darwin10.8.0/bin/
-B/usr/local/x86_64-apple-darwin10.8.0/lib/ -isystem
/usr/local/x86_64-apple-darwin10.8.0/include -isystem
/usr/local/x86_64-apple-darwin10.8.0/sys-include    -dynamiclib -Wl,-undefined
-Wl,dynamic_lookup -o .libs/libstdc++.6.dylib  .libs/compatibility.o
.libs/compatibility-debug_list.o .libs/compatibility-debug_list-2.o
.libs/compatibility-c++0x.o .libs/compatibility-atomic-c++0x.o
.libs/compatibility-thread-c++0x.o .libs/compatibility-chrono.o
.libs/compatibility-condvar.o  
-Wl,-force_load,../libsupc++/.libs/libsupc++convenience.a
-Wl,-force_load,../src/c++98/.libs/libc++98convenience.a
-Wl,-force_load,../src/c++11/.libs/libc++11convenience.a 
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/libsupc++/.libs
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/src
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/src/.libs
-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/../libvtv/.libs
-lm  -Wl,--rpath
-Wl,/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/../libvtv/.libs
-Wl,-single_module -Wl,-u_vtable_map_vars_start -Wl,-u_vtable_map_vars_end
-Wl,-exported_symbols_list -Wl,libstdc++-symbols.explist   -install_name 
/usr/local/lib/gcc/x86_64-apple-darwin10.8.0/6.0.0/libstdc++.6.dylib
-compatibility_version 7 -current_version 7.22 -Wl,-single_module
ld: warning: directory not found for option
'-L/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/../libvtv/.libs'
ld: unknown option: --rpath
collect2: error: ld returned 1 exit status
make[6]: *** [libstdc++.la] Error 1
make[6]: Leaving directory
`/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/src'
make[5]: *** [all-recursive] Error 1
make[5]: Leaving directory
`/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3/src'
make[4]: *** [all-recursive] Error 1
make[4]: Leaving directory
`/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3'
make[3]: *** [all] Error 2
make[3]: Leaving directory
`/Users/ericgallager/gcc-git/my_oddly_named_builddir/x86_64-apple-darwin10.8.0/libstdc++-v3'
make[2]: *** [all-stage1-target-libstdc++-v3] Error 2
make[2]: Leaving directory
`/Users/ericgallager/gcc-git/my_oddly_named_builddir'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory
`/Users/ericgallager/gcc-git/my_oddly_named_builddir'
make: *** [all] Error 2

The offending flag comes from the VTV_CXXLINKFLAGS Makefile variable, which
comes from the GLIBCXX_ENABLE_VTABLE_VERIFY autoconf macro in
libstdc++-v3/acinclude.m4 (so that'd probably have to be patched, too)