Address Sanitizer (ASan)

What is "Address Sanitizer"？

Address Sanitizer is a tool for detection memory error, like stack over flow, buffer over follw, memory leak…etc.

How to use it ?

1. set the compiler flag
   ​​​​-fsanitize=address -fno-omit-frame-pointer
   ​​​​-fsanitize=address
   

2. including the LSan, so when you enable ASan, the LSan also be enabled.

   You can use
   ASAN_OPTIONS=detect_leaks=1 to enable it
   ASAN_OPTIONS=detect_leaks=0 to disenable it

   Here are others options:
   • halt_on_error=0：non-stop when memory happens
   • malloc_context_size=15
   • log_path=/path/to/logfile
   • suppressions=$SUPP_FILE
3. running the code
   ​​​​LD_PRELOAD=/path/to/Asanlib.so ./test_program
   

   or add -static-libasan for static library into the target program

How to work

ref

• Clang Asan
• Address Sanitizer