https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83603
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> --- And: $ gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/builtin-stringop-chk-4.c -O1 -c -Wrestrict ... /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/builtin-stringop-chk-4.c:384:6: internal compiler error: in maybe_diag_overlap, at gimple-ssa-warn-restrict.c:1365 void test_strncat_chk_range (char *d) ^~~~~~~~~~~~~~~~~~~~~~ 0x914415 maybe_diag_overlap ../../gcc/gimple-ssa-warn-restrict.c:1363 0x914415 check_bounds_or_overlap(gcall*, tree_node*, tree_node*, tree_node*, tree_node*, bool) ../../gcc/gimple-ssa-warn-restrict.c:1752 0x914682 check_call ../../gcc/gimple-ssa-warn-restrict.c:1685 0x914682 before_dom_children ../../gcc/gimple-ssa-warn-restrict.c:106 0x134f0a7 dom_walker::walk(basic_block_def*) ../../gcc/domwalk.c:308 0x90b109 execute ../../gcc/gimple-ssa-warn-restrict.c:120