https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82485
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2017-10-09 CC| |dansan at gcc dot gnu.org Target Milestone|--- |8.0 Ever confirmed|0 |1 --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- On a slightly modified testcase this starts already at r251321. struct S { char s[0x40000000]; } s; void foo (struct S *p) { char b[0x07fffffff0000000L]; *(struct S *)&b[0x07ffffffef000000L] = s; *p = *(struct S *)&b[0x07ffffffefffffffL]; }