1 files changed, 0 insertions, 56 deletions
diff --git a/lib/scudo/scudo_utils.h b/lib/scudo/scudo_utils.h
index 33798194d..320eced34 100644
--- a/lib/scudo/scudo_utils.h
+++ b/lib/scudo/scudo_utils.h
@@ -31,62 +31,6 @@ INLINE Dest bit_cast(const Source& source) {
 void NORETURN dieWithMessage(const char *Format, ...);
 
 bool hasHardwareCRC32();
-
-INLINE u64 rotl(const u64 X, int K) {
-  return (X << K) | (X >> (64 - K));
-}
-
-// XoRoShiRo128+ PRNG (http://xoroshiro.di.unimi.it/).
-struct XoRoShiRo128Plus {
- public:
-  void init() {
-    if (UNLIKELY(!GetRandom(reinterpret_cast<void *>(State), sizeof(State),
-                            /*blocking=*/false))) {
-      // On some platforms, early processes like `init` do not have an
-      // initialized random pool (getrandom blocks and /dev/urandom doesn't
-      // exist yet), but we still have to provide them with some degree of
-      // entropy. Not having a secure seed is not as problematic for them, as
-      // they are less likely to be the target of heap based vulnerabilities
-      // exploitation attempts.
-      State[0] = NanoTime();
-      State[1] = 0;
-    }
-    fillCache();
-  }
-  u8 getU8() {
-    if (UNLIKELY(isCacheEmpty()))
-      fillCache();
-    const u8 Result = static_cast<u8>(CachedBytes & 0xff);
-    CachedBytes >>= 8;
-    CachedBytesAvailable--;
-    return Result;
-  }
-  u64 getU64() { return next(); }
-
- private:
-  u8 CachedBytesAvailable;
-  u64 CachedBytes;
-  u64 State[2];
-  u64 next() {
-    const u64 S0 = State[0];
-    u64 S1 = State[1];
-    const u64 Result = S0 + S1;
-    S1 ^= S0;
-    State[0] = rotl(S0, 55) ^ S1 ^ (S1 << 14);
-    State[1] = rotl(S1, 36);
-    return Result;
-  }
-  bool isCacheEmpty() {
-    return CachedBytesAvailable == 0;
-  }
-  void fillCache() {
-    CachedBytes = next();
-    CachedBytesAvailable = sizeof(CachedBytes);
-  }
-};
-
-typedef XoRoShiRo128Plus ScudoPrng;
-
 }  // namespace __scudo
 
 #endif  // SCUDO_UTILS_H_