1 files changed, 41 insertions, 0 deletions
diff --git a/absl/base/internal/unaligned_access.h b/absl/base/internal/unaligned_access.h
index c5724362a4e3..5c7517abd71a 100644
--- a/absl/base/internal/unaligned_access.h
+++ b/absl/base/internal/unaligned_access.h
@@ -103,6 +103,47 @@ inline void UnalignedStore64(void *p, uint64_t v) {
 #define ABSL_INTERNAL_UNALIGNED_STORE64(_p, _val) \
   (absl::UnalignedStore64(_p, _val))
 
+#elif defined(UNDEFINED_BEHAVIOR_SANITIZER)
+
+namespace absl {
+
+inline uint16_t UnalignedLoad16(const void *p) {
+  uint16_t t;
+  memcpy(&t, p, sizeof t);
+  return t;
+}
+
+inline uint32_t UnalignedLoad32(const void *p) {
+  uint32_t t;
+  memcpy(&t, p, sizeof t);
+  return t;
+}
+
+inline uint64_t UnalignedLoad64(const void *p) {
+  uint64_t t;
+  memcpy(&t, p, sizeof t);
+  return t;
+}
+
+inline void UnalignedStore16(void *p, uint16_t v) { memcpy(p, &v, sizeof v); }
+
+inline void UnalignedStore32(void *p, uint32_t v) { memcpy(p, &v, sizeof v); }
+
+inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
+
+}  // namespace absl
+
+#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) (absl::UnalignedLoad16(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) (absl::UnalignedLoad32(_p))
+#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) (absl::UnalignedLoad64(_p))
+
+#define ABSL_INTERNAL_UNALIGNED_STORE16(_p, _val) \
+  (absl::UnalignedStore16(_p, _val))
+#define ABSL_INTERNAL_UNALIGNED_STORE32(_p, _val) \
+  (absl::UnalignedStore32(_p, _val))
+#define ABSL_INTERNAL_UNALIGNED_STORE64(_p, _val) \
+  (absl::UnalignedStore64(_p, _val))
+
 #elif defined(__x86_64__) || defined(_M_X64) || defined(__i386) || \
     defined(_M_IX86) || defined(__ppc__) || defined(__PPC__) ||    \
     defined(__ppc64__) || defined(__PPC64__)