https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79625
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> --- I'm suggesting following error messages: $ ./xgcc -B. /home/marxin/Programming/gcc2/gcc/testsuite/gcc.dg/gimplefe-11.c -fgimple -flto /home/marxin/Programming/gcc2/gcc/testsuite/gcc.dg/gimplefe-11.c: In function ‘bar’: /home/marxin/Programming/gcc2/gcc/testsuite/gcc.dg/gimplefe-11.c:5:1: error: ‘__GIMPLE’ function cannot be compiled with ‘-flto’ { ^ /home/marxin/Programming/gcc2/gcc/testsuite/gcc.dg/gimplefe-11.c: In function ‘foo’: /home/marxin/Programming/gcc2/gcc/testsuite/gcc.dg/gimplefe-11.c:13:1: error: ‘__GIMPLE’ function cannot be compiled with ‘-flto’ { ^ and $ ./xgcc -B. /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/rtl/x86_64/dfinit.c -flto /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/rtl/x86_64/dfinit.c: In function ‘test_1’: /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/rtl/x86_64/dfinit.c:108:1: error: ‘__RTL’ function cannot be compiled with ‘-flto’ } ^ Is it fine?