https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55212
--- Comment #180 from Kazumoto Kojima <kkojima at gcc dot gnu.org> --- (In reply to Kazumoto Kojima from comment #174) > > FAIL: gcc.c-torture/execute/struct-ret-1.c -O2 execution test > > FAIL: gcc.c-torture/execute/struct-ret-1.c -O3 -g execution test > > FAIL: gcc.c-torture/execute/struct-ret-1.c -O2 -flto > > -fno-use-linker-plugin -flto-partition=none execution test ... > I'll look the above execution errors into more closely. It turned out that these FAILs don't show the real compiler issue but rather a problem with my newlib build. Sorry for the noise.