Hi Qingnan, on 2020/12/24 上午11:23, Qingnan Duan via Gcc-help wrote: > Hi everyone, > I was looking at this page Instrumentation Options (Using the GNU Compiler Collection (GCC))<https://gcc.gnu.org/onlinedocs/gcc/Instrumentation-Options.html> and it says "-fsanitize=address" is only supported on AArch64. However, I was able to compile my code on x86-64 CPU with -fsanitize=address flag. > I think the part "Note that the only target this option is currently supported on is AArch64. " is specific for option “-fsanitize=hwaddress” not for option "-fsanitize=address". Only aarch64 port re-defines TARGET_MEMTAG_CAN_TAG_ADDRESSES which is used for -fsanitize=hwaddress, that matches the wordings. By the way, I also felt a bit confused without digging, not sure whether it's confusing from native speaker's perspective. If yes, maybe it's worth to revise it somehow. :) > Is the document out-of-date? Or, does it mean the result of ASan is not guaranteed on any platform other than AArch64? > Thanks in advance for your help! > > Best regards, > Qingnan Duan > BR, Kewen
