[compiler-rt] [asan] Re-exec without ASLR if needed on 32-bit Linux (PR #131975)

[Florian Mayer via llvm-commits]

================
@@ -107,6 +108,33 @@ void FlushUnneededASanShadowMemory(uptr p, uptr size) {
   ReleaseMemoryPagesToOS(MemToShadow(p), MemToShadow(p + size));
 }
 
+void ReExecWithoutASLR() {
+  // ASLR personality check.
+  // Caution: 'personality' is sometimes forbidden by sandboxes, so only call
+  // this function as a last resort (when the memory mapping is incompatible
+  // and ASan would fail anyway).
+  int old_personality = personality(0xffffffff);
----------------
fmayer wrote:

I would have

```
if (old_personality == -1) {
  [log error]
  return;
}
```

https://github.com/llvm/llvm-project/pull/131975