https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79754
--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> --- This still ICEs on r12-7199: $ x86_64-pc-linux-gnu-gcc testcase.c testcase.c: In function 'foo': testcase.c:2:1: internal compiler error: in type_natural_mode, at config/i386/i386.cc:1978 2 | V foo (V a) { return a * a; } | ^ 0x81e1e7 type_natural_mode /repo/gcc-trunk/gcc/config/i386/i386.cc:1978 0x172382a ix86_return_in_memory /repo/gcc-trunk/gcc/config/i386/i386.cc:4230 0x101084d aggregate_value_p(tree_node const*, tree_node const*) /repo/gcc-trunk/gcc/function.cc:2119 0x10154ac allocate_struct_function(tree_node*, bool) /repo/gcc-trunk/gcc/function.cc:4845 0xd26104 store_parm_decls() /repo/gcc-trunk/gcc/c/c-decl.cc:10160 0xd855c7 c_parser_declaration_or_fndef /repo/gcc-trunk/gcc/c/c-parser.cc:2505 0xd8d8a3 c_parser_external_declaration /repo/gcc-trunk/gcc/c/c-parser.cc:1779 0xd8e2eb c_parser_translation_unit /repo/gcc-trunk/gcc/c/c-parser.cc:1652 0xd8e2eb c_parse_file() /repo/gcc-trunk/gcc/c/c-parser.cc:23348 0xdef9fd c_common_parse_file() /repo/gcc-trunk/gcc/c-family/c-opts.cc:1238 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. but works on powerpc64le (at least, doesn't ICE; I didn't check if the code is correct): $ powerpc64le-unknown-linux-gnu-gcc testcase.c -c (no output)