https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118449
Iain Buclaw <ibuclaw at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ibuclaw at gcc dot gnu.org --- Comment #1 from Iain Buclaw <ibuclaw at gcc dot gnu.org> --- I think the reported line number slightly off. Ran it with -fsanitize=alignment and got this. ../../../../libphobos/libdruntime/core/internal/gc/blockmeta.d:143:21: runtime error: store to misaligned address 0x590c2c6107b3 for type 'ushort', which requires 2 byte alignment 0x590c2c6107b3: note: pointer points here 00 00 00 00 00 00 00 00 00 51 00 00 00 00 00 00 00 75 6e 64 65 66 69 6e 65 64 20 73 79 6d 62 6f ^