1 files changed, 76 insertions, 0 deletions
diff --git a/sys-cluster/ceph/files/ceph-14.2.4-undefined-behaviour.patch b/sys-cluster/ceph/files/ceph-14.2.4-undefined-behaviour.patch
new file mode 100644
index 000000000000..99249fb01a0c
--- /dev/null
+++ b/sys-cluster/ceph/files/ceph-14.2.4-undefined-behaviour.patch
@@ -0,0 +1,76 @@
+diff --git a/src/include/blobhash.h b/src/include/blobhash.h
+index 597884e4c9..97f2065ce3 100644
+--- a/src/include/blobhash.h
++++ b/src/include/blobhash.h
+@@ -14,33 +14,40 @@
+ #ifndef CEPH_BLOBHASH_H
+ #define CEPH_BLOBHASH_H
+ 
++#include <cstdint>
+ #include "hash.h"
+ 
+-/*
+-- this is to make some of the STL types work with 64 bit values, string hash keys, etc.
+-- added when i was using an old STL.. maybe try taking these out and see if things 
+-  compile now?
+-*/
+-
+ class blobhash {
+ public:
+-  uint32_t operator()(const char *p, unsigned len) {
+-    static rjhash<uint32_t> H;
+-    uint32_t acc = 0;
++  uint32_t operator()(const void* p, size_t len) {
++    static rjhash<std::uint32_t> H;
++    std::uint32_t acc = 0;
++    auto buf = static_cast<const unsigned char*>(p);
+     while (len >= sizeof(acc)) {
+-      acc ^= *(uint32_t*)p;
+-      p += sizeof(uint32_t);
+-      len -= sizeof(uint32_t);
++      acc ^= unaligned_load(buf);
++      buf += sizeof(std::uint32_t);
++      len -= sizeof(std::uint32_t);
+     }
+-    int sh = 0;
+-    while (len) {
+-      acc ^= (uint32_t)*p << sh;
+-      sh += 8;
+-      len--;
+-      p++;
++    // handle the last few bytes of p[-(len % 4):]
++    switch (len) {
++    case 3:
++      acc ^= buf[2] << 16;
++      [[fallthrough]];
++    case 2:
++      acc ^= buf[1] << 8;
++      [[fallthrough]];
++    case 1:
++      acc ^= buf[0];
++      [[fallthrough]];
+     }
+     return H(acc);
+   }
++private:
++  static inline std::uint32_t unaligned_load(const unsigned char* p) {
++    std::uint32_t result;
++    __builtin_memcpy(&result, p, sizeof(result));
++    return result;
++  }
+ };
+ 
+ 
+diff --git a/src/msg/msg_types.h b/src/msg/msg_types.h
+index b6952ca498..576b7d6b8a 100644
+--- a/src/msg/msg_types.h
++++ b/src/msg/msg_types.h
+@@ -566,7 +566,7 @@ namespace std {
+     size_t operator()( const entity_addr_t& x ) const
+     {
+       static blobhash H;
+-      return H((const char*)&x, sizeof(x));
++      return H(&x, sizeof(x));
+     }
+   };
+ } // namespace std