valgrind asan runtime does not come first in initial library list

Question

I build with GCC 10 flag -fsanitize=address and can run the program just fine, however if I run it under Valgrind it shows Asan error:

==477229== Memcheck, a memory error detector
==477229== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==477229== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info
==477229== Command: ./a.out
==477229== 
==477229==ASan runtime does not come first in initial library list; you should either link runtime to your application or manually preload it with LD_PRELOAD.
==477229== 
==477229== HEAP SUMMARY:
==477229==     in use at exit: 0 bytes in 0 blocks
==477229==   total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==477229== 
==477229== All heap blocks were freed -- no leaks are possible
==477229== 
==477229== For lists of detected and suppressed errors, rerun with: -s
==477229== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)

ldd myprogram
    linux-vdso.so.1 (0x00007ffd0bd90000)
    libasan.so.6 => /lib/x86_64-linux-gnu/libasan.so.6 (0x00007f7256ba6000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f72569b4000)
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f72569ae000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f725698b000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f725683c000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f7256821000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f7257599000)

Remove -fsanitize=address, Valgrind can run it well. So why does the sanitizer make Valgrind miss Asan libraries?

Answer 1

At least a while ago mixing ASan and Valgrind was not supported, so it looks it is still not supported.

See valgrind, gcc 6.2.0 and "-fsanitize=address" for similar questions.