[compiler-rt] [compiler-rt][rtsan] socketpair interception. (PR #124107)

[Chris Apple via llvm-commits]

================
@@ -1021,6 +1021,16 @@ INTERCEPTOR(int, setsockopt, int socket, int level, int option,
 #define RTSAN_MAYBE_INTERCEPT_SETSOCKOPT
 #endif
 
+#if !SANITIZER_APPLE
----------------
cjappl wrote:

Apple has socketpair, for the record (or at least mine does)

```
> man 2 socketpair | head
SOCKETPAIR(2)                 System Calls Manual                SOCKETPAIR(2)

NAME
     socketpair – create a pair of connected sockets

SYNOPSIS
     #include <sys/socket.h>

     int
     socketpair(int domain, int type, int protocol, int socket_vector[2]);
```

https://github.com/llvm/llvm-project/pull/124107