This is more or less expected. As Kuba said, there's no distinction between a check for a heap overflow or global overflow - we just check that every memory access is valid.
On Thu, Jun 22, 2017 at 9:08 AM, Aayushi Agrawal <[email protected]> wrote: > Yes I tried but its coming out to be almost same. > > Slowdown is almost 2 times. > > On Wed, Jun 21, 2017 at 9:28 PM, Kuba Mracek <[email protected]> wrote: > >> How big is the slowdown? Did you try using ASan with higher optimization >> levels (-O1, -O2, -O3)? >> >> At the point where ASan instruments memory reads and writes, it doesn't >> know whether the destination is a stack variable, a global variable or a >> pointer to the heap. So I don't think there's a way of selectively only >> instrumenting stack and/or globals. >> >> Kuba >> >> On 21 Jun 2017, at 04:11, Aayushi Agrawal <[email protected]> wrote: >> >> Hello >> >> I used " -fsanitise=address " as one of the option for compiling my >> program with clang. >> But it slows down the execution of the program. >> >> Can anybody please tell me that is there a way to only check the stack >> variables overflow, global variables overflow and avoid all other checks >> using ASAN which could help in improving the execution speed? >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "address-sanitizer" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> >> >> > > > -- > Aayushi Agrawal > B.Tech(Final Year) > Computer Science Engineering Undergraduate > LNMIIT,JAIPUR > Contact - 09649357639 > > -- > You received this message because you are subscribed to the Google Groups > "address-sanitizer" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "address-sanitizer" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
