https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86911
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> --- Sounds very probable, this is what I see in GDB: $ Breakpoint 1, get_visual_column (exploc=..., loc=2147489278, out=0x7fffffffca24, first_nws=0x0) at /home/marxin/Programming/gcc2/gcc/c-family/c-indentation.c:79 79 in /home/marxin/Programming/gcc2/gcc/c-family/c-indentation.c (gdb) p line $3 = {m_ptr = 0x7ffff5ebde79 " {\n while (__first != __last && !__pred(__first))\n\t++__first;\n return __first;\n }\n\n /// This is an overload used by find algos for the RAI case.\n template<typename _RandomAccessItera"..., m_n_elts = 5} $ (gdb) p i $6 = 6 May I help with debugging or is it clear what happens?