https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105552
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- You can try creating a mpfr testcase calling mpfr_sin, the mpfr representation of 3.1415926535897932384626433832795028841971693993751 can probably be obtained by one of the string conversion routines in it.