https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80498
--- Comment #11 from jonne <gcc at zutt dot org> ---
Doesn't seem to work, it cannot find the symbol.
(gdb) break __asan_init
Function "__asan_init" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
(I tried with three underscores too.)
Looks like it is there though:
$ otool -Iv ./a.out | egrep "___asan_(init|reg)"
0x0000000100049b80 10151 ___asan_init
0x0000000100049b86 10153 ___asan_register_globals
0x0000000100073ce0 10151 ___asan_init
0x0000000100073ce8 10153 ___asan_register_globals
Is this at all helpful?
(setting breakpoint to above two addresses for ___asan_init:
(gdb) break *0x0000000100049b80
Breakpoint 1 at 0x100049b80
(gdb) break *0x0000000100073ce0
Breakpoint 2 at 0x100073ce0
(gdb) run
Starting program: /private/tmp/a.out
[New Thread 0x1403 of process 49328]
warning: unhandled dyld version (15)
Thread 2 hit Breakpoint 1, 0x0000000100049b80 in ?? ()
Then 'layout asm' ... many jumps again ...
┌─────────────────────────────────────────────────────────────────────────────────────────────────────┐
B+>│0x100049b80 jmpq *0x2a15a(%rip) # 0x100073ce0
│
│0x100049b86 jmpq *0x2a15c(%rip) # 0x100073ce8
│
│0x100049b8c jmpq *0x2a15e(%rip) # 0x100073cf0
│
│0x100049b92 jmpq *0x2a160(%rip) # 0x100073cf8
│
│0x100049b98 jmpq *0x2a162(%rip) # 0x100073d00
│
│0x100049b9e jmpq *0x2a164(%rip) # 0x100073d08
│
│0x100049ba4 jmpq *0x2a166(%rip) # 0x100073d10
│
│0x100049baa jmpq *0x2a168(%rip) # 0x100073d18
│
│0x100049bb0 jmpq *0x2a16a(%rip) # 0x100073d20
│
│0x100049bb6 jmpq *0x2a16c(%rip) # 0x100073d28
│
│0x100049bbc jmpq *0x2a16e(%rip) # 0x100073d30
│
│0x100049bc2 jmpq *0x2a170(%rip) # 0x100073d38
│
│0x100049bc8 jmpq *0x2a172(%rip) # 0x100073d40
│
│0x100049bce jmpq *0x2a174(%rip) # 0x100073d48
│
│0x100049bd4 jmpq *0x2a176(%rip) # 0x100073d50
│
│0x100049bda jmpq *0x2a178(%rip) # 0x100073d58
│
│0x100049be0 jmpq *0x2a17a(%rip) # 0x100073d60
│
│0x100049be6 jmpq *0x2a17c(%rip) # 0x100073d68
