diff --git a/bin/src/bytrace.cpp b/bin/src/bytrace.cpp
index 3f6bb59..81304d2 100755
--- a/bin/src/bytrace.cpp
+++ b/bin/src/bytrace.cpp
@@ -177,9 +177,15 @@ static string CanonicalizeSpecPath(const char* src)
         return "";
     }
 #else
-    if (realpath(src, resolvedPath) == nullptr) {
-        fprintf(stderr, "Error: _fullpath %s failed", src);
-        return "";
+    if (access(src, F_OK) == 0) {
+        if (realpath(src, resolvedPath) == nullptr) {
+            fprintf(stderr, "Error: _fullpath %s failed", src);
+            return "";
+        }
+    } else {
+        if (sprintf_s(resolvedPath, PATH_MAX, "%s", src) == -1) {
+            return "";
+        }
     }
 #endif
     string res(resolvedPath);
diff --git a/bin/test/unittest/common/native/bytrace_ndk_test.cpp b/bin/test/unittest/common/native/bytrace_ndk_test.cpp
index 3430172..b0d5f35 100755
--- a/bin/test/unittest/common/native/bytrace_ndk_test.cpp
+++ b/bin/test/unittest/common/native/bytrace_ndk_test.cpp
@@ -283,7 +283,7 @@ MyTrace GetTraceResult(const string& checkContent, const vector<string>& list)
     regex pattern(checkContent);
     smatch match;
     Param param {""};
-    for (unsigned int i = list.size() - 1; i >= 0; i--) {
+    for (int i = list.size() - 1; i >= 0; i--) {
         if (regex_match(list[i],  match, pattern)) {
             param.m_task = match[TASK];
             param.m_tid =  match[TID];