https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103328
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
1916 /* If STMT has a block defined, map it to the newly constructed
block. */
1917 if (tree block = gimple_block (copy))
1918 {
1919 tree *n;
1920 n = id->decl_map->get (block);
1921 gcc_assert (n);
is where the -fno-checking ICE occurs. Note that nicely maps to the complaints
with -fchecking.
