Post #4326503

Found an issue with Risc-V ILP32E ABI in GCC today and am looking for guidance. ILP32E stack need only be aligned to 4-bytes, however types wider than 4 bytes are listed as having wider alignment requirements in current GCC source. So, when you take the address of an 8-byte value on the stack which is not 8-byte aligned and try to use it with -fsanitize=undefined, you get a UB fault. Question: Is this a bug in ubsan? Or should all type alignment restrictions be relaxed under ILP32E?