emerge-falco gdb (with gdb 7.11)

/usr/bin/../lib64/clang/3.8.0/include/__stddef_max_align_t.h:40:3: note: previous definition is here
} max_align_t;
  ^
In file included from ../.././gnulib/import/stripslash.c:21:
In file included from ../.././gnulib/import/dirname.h:23:
./stddef.h:104:3: error: typedef redefinition with different types ('union max_align_t' vs 'struct max_align_t')
} max_align_t;
  ^
/usr/bin/../lib64/clang/3.8.0/include/__stddef_max_align_t.h:40:3: note: previous definition is here
} max_align_t;
  ^
1 error generated.