http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54267
--- Comment #4 from David Keller <david.keller at litchis dot fr> 2012-08-15 03:05:29 UTC --- I'am trying. It's not reproducible with <system_error> classes. Static build seems to use shared libgcc_s: $ldd bin/gcc-4.7/release/link-static/threading-multi/main bin/gcc-4.7/release/link-static/threading-multi/main: libstdc++.so.6 => /usr/local/lib/gcc47/libstdc++.so.6 (0x80084d000) libm.so.5 => /lib/libm.so.5 (0x800b55000) libgcc_s.so.1 => /usr/local/lib/gcc47/libgcc_s.so.1 (0x800d76000) libthr.so.3 => /lib/libthr.so.3 (0x800f8b000) libc.so.7 => /lib/libc.so.7 (0x8011ae000) Shared build reproduces.