http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48570
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-04-12 12:21:48 UTC --- Breakpoint 1, main () at sub.cc:4 4 const wchar_t& z0 = (L"01234")[0]; (gdb) n 5 const wchar_t& z1 = (L"01234")[1]; (gdb) 6 const wchar_t& z2 = (L"01234")[2]; (gdb) 7 const wchar_t& z3 = (L"01234")[3]; (gdb) 8 return (z1 == L'1'); (gdb) p z0 $1 = (const wchar_t &) @0x7fffffffe590: 48 L'0' (gdb) p z1 $2 = (const wchar_t &) @0x7fffffffe594: 0 L'\000' (gdb) p z2 $3 = (const wchar_t &) @0x7fffffffe598: 0 L'\000' (gdb) p z3 $4 = (const wchar_t &) @0x7fffffffe59c: 0 L'\000' The string literal contains zeroes past the first character
