[compiler-rt] [rtsan] Add fork/execve interceptors (PR #117198)

[Chris Apple via llvm-commits]

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@@ -751,6 +754,22 @@ INTERCEPTOR(int, mkfifo, const char *pathname, mode_t mode) {
   return REAL(mkfifo)(pathname, mode);
 }
 
+INTERCEPTOR(pid_t, fork, void) {
+  __rtsan_notify_intercepted_call("fork");
+  return REAL(fork)();
+}
+
+INTERCEPTOR(int, execve, const char *filename, char *const argv[],
+            char *const envp[]) {
+  __rtsan_notify_intercepted_call("execve");
+  return REAL(execve)(filename, argv, envp);
+}
+
+// TODO: the `wait` family of functions is an oddity. In testing, if you
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cjappl wrote:

Drawing folks attention here

https://github.com/llvm/llvm-project/pull/117198