http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49396
--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2011-06-14 13:23:09 UTC --- On Tue, 14 Jun 2011, rguenth at gcc dot gnu.org wrote: > I think it should be > > Index: c-family/c-cppbuiltin.c > =================================================================== > --- c-family/c-cppbuiltin.c (revision 175011) > +++ c-family/c-cppbuiltin.c (working copy) > @@ -559,7 +559,7 @@ c_cpp_builtins_optimize_pragma (cpp_read > cpp_undef (pfile, "__FINITE_MATH_ONLY__"); > cpp_define (pfile, "__FINITE_MATH_ONLY__=1"); > } > - else if (!prev->x_flag_finite_math_only && cur->x_flag_finite_math_only) > + else if (prev->x_flag_finite_math_only && !cur->x_flag_finite_math_only) > { > cpp_undef (pfile, "__FINITE_MATH_ONLY__"); > cpp_define (pfile, "__FINITE_MATH_ONLY__=0"); Looks right to me.