Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_common.h
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_common.h
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_common.h
@@ -238,7 +238,7 @@
 // (or NULL if mapping fails). Stores the size of mmaped region
 // in '*buff_size'.
 void *MapFileToMemory(const char *file_name, uptr *buff_size);
-void *MapWritableFileToMemory(void *addr, uptr size, fd_t fd, uptr offset);
+void *MapWritableFileToMemory(void *addr, uptr size, fd_t fd, OFF_T offset);
 
 bool IsAccessibleMemoryRange(uptr beg, uptr size);
 
Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc
@@ -104,7 +104,7 @@
 
 // --------------- sanitizer_libc.h
 uptr internal_mmap(void *addr, uptr length, int prot, int flags, int fd,
-                   u64 offset) {
+                   OFF_T offset) {
 #if SANITIZER_FREEBSD || SANITIZER_LINUX_USES_64BIT_SYSCALLS
   return internal_syscall(SYSCALL(mmap), (uptr)addr, length, prot, flags, fd,
                           offset);
Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.h
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.h
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.h
@@ -35,7 +35,7 @@
 
 // Memory
 uptr internal_mmap(void *addr, uptr length, int prot, int flags,
-                   int fd, u64 offset);
+                   int fd, OFF_T offset);
 uptr internal_munmap(void *addr, uptr length);
 int internal_mprotect(void *addr, uptr length, int prot);
 
Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.cc
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.cc
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.cc
@@ -240,14 +240,14 @@
   return internal_iserror(map) ? 0 : (void *)map;
 }
 
-void *MapWritableFileToMemory(void *addr, uptr size, fd_t fd, uptr offset) {
+void *MapWritableFileToMemory(void *addr, uptr size, fd_t fd, OFF_T offset) {
   uptr flags = MAP_SHARED;
   if (addr) flags |= MAP_FIXED;
   uptr p = internal_mmap(addr, size, PROT_READ | PROT_WRITE, flags, fd, offset);
   int mmap_errno = 0;
   if (internal_iserror(p, &mmap_errno)) {
-    Printf("could not map writable file (%d, %zu, %zu): %zd, errno: %d\n",
-           fd, offset, size, p, mmap_errno);
+    Printf("could not map writable file (%d, %lld, %zu): %zd, errno: %d\n",
+           fd, (long long)offset, size, p, mmap_errno);
     return 0;
   }
   return (void *)p;
Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_win.cc
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_win.cc
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_win.cc
@@ -170,7 +170,7 @@
   UNIMPLEMENTED();
 }
 
-void *MapWritableFileToMemory(void *addr, uptr size, fd_t fd, uptr offset) {
+void *MapWritableFileToMemory(void *addr, uptr size, fd_t fd, OFF_T offset) {
   UNIMPLEMENTED();
 }