You can build asan.so from LLVM tree like this: cd lvm/projects/compiler-rt/lib clang -o asan.so -DASAN_USE_PREINIT_ARRAY=0 -fno-exceptions -fno-rtti -I. -O2 -fPIC -shared asan/*.cc sanitizer_common/*.cc interception/*.cc lsan/lsan_common.cc lsan/lsan_common_linux.cc
LD_PRELOAD may appear to work for simple cases, but the devil is in the detail. What if your process creates other processes? They will also have asan.so preloaded. Sometimes it's ok, sometimes not. We may be able to support building asan as a DSO in clang tree as well, but I don't want to do this unless we know that someone really needs it and this is the right way to solve some problem. --kcc On Thu, Feb 6, 2014 at 1:32 PM, mjoc <[email protected]> wrote: > Thanks Kcc and Yuri, > > Running on Linux. > > I have been using clang, I will try gcc and LD_PRELOAD. > > Thanks, > > mjoc > > > On Wednesday, 5 February 2014 14:25:34 UTC, Yuri Gribov wrote: >> >> >> Is there anyway to build a shared object with asan support and load >> this >> >> in a non-asan executable? >> >> Which platform are we talking about? >> >> > For your case, you may try to build asan run time as a shared library >> and >> > LD_PRELOAD it into your process. >> > But this is really tricky and I don't recommend this unless you are >> > desperate. >> >> FYI this works out-of-the-box with GCC ASan (which allows dynamic ASan >> runtime). >> >> -Y >> > -- > 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/groups/opt_out. > -- 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/groups/opt_out.
