[ASan] make variable unsigned to silence the warning

llvm-svn: 175284

diff --git a/compiler-rt/lib/asan/asan_mac.cc b/compiler-rt/lib/asan/asan_mac.cc
index f6605b7..e8e6b22 100644 (file)
--- a/compiler-rt/lib/asan/asan_mac.cc
+++ b/compiler-rt/lib/asan/asan_mac.cc
@@ -133,7 +133,7 @@ void MaybeReexec() {
       const_cast<char*>(GetEnv(kDyldInsertLibraries));
   sptr old_env_len = dyld_insert_libraries ?
       internal_strlen(dyld_insert_libraries) : 0;
-  sptr fname_len = internal_strlen(info.dli_fname);
+  uptr fname_len = internal_strlen(info.dli_fname);
   if (!dyld_insert_libraries ||
       !REAL(strstr)(dyld_insert_libraries, info.dli_fname)) {
     // DYLD_INSERT_LIBRARIES is not set or does not contain the runtime