https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66563
--- Comment #22 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> --- (In reply to Oleg Endo from comment #20) > (In reply to John Paul Adrian Glaubitz from comment #16) > > ... > > 763a3c: 03 61 mov r0,r1 > > 763a3e: 00 e3 mov #0,r3 > > 763a40: 16 62 mov.l @r1+,r2 > > 763a42: 3c 22 cmp/str r3,r2 > > 763a44: fc 8b bf 763a40 > > ... > > That's a code snippet of the builtin strlen which has been added in 4.9... That's strange. As Kaz has observed correctly, gcc always seems to segfault when it comes to float arithmetics as I posted in #7. Provided that you're right, how would a bug in strlen this explain that gcc always segfaults when it needs to do float arithmetics? Hmm. I will do some further testing with a downgraded libmpfr.
