JavaScriptBench
diff --git a/‎tools/wasm-sourcemap.py‎
Lines changed: 4 additions & 1 deletion b/‎tools/wasm-sourcemap.py‎
Lines changed: 4 additions & 1 deletion
@@ -279,7 +279,10 @@ def build_sourcemap(entries, code_section_offset, prefixes, collect_sources, bas
     if prefixes.provided():
       source_name = prefixes.sources.resolve(file_name)
     else:
-      file_name = os.path.relpath(os.path.abspath(file_name), base_path)
+      try:
+        file_name = os.path.relpath(file_name, base_path)
+      except ValueError:
+        file_name = os.path.abspath(file_name)
       file_name = normalize_path(file_name)
       source_name = file_name
     if source_name not in sources_map: