https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78812
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2016-12-15 Target Milestone|--- |5.5 Summary|Wrong code generation due |[5/6/7 Regression] Wrong |to hoisting memory load |code generation due to |across function call |hoisting memory load across | |function call Ever confirmed|0 |1 --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- But in the end it actually is a regression that started r166555 (previously it has been latent). Slightly adjusted testcase: struct T { bool a; T () : a (false) {} ~T () { if (!a) __builtin_abort (); } }; __attribute__((noinline)) void test (T &x) { x.a = true; } int main () { T T; test (T); }