https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64946
Shiva Chen <shiva0217 at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |shiva0217 at gmail dot com --- Comment #12 from Shiva Chen <shiva0217 at gmail dot com> --- It seems that the patch was dropped according to https://gcc.gnu.org/ml/gcc-patches/2016-01/msg00610.html. Could we use TYPE_OVERFLOW_UNDEFINED to guard the transformation like other place in gcc did ? Any thoughts?