diff --git a/src/common/linux/dump_symbols.cc b/src/common/linux/dump_symbols.cc
index 046c7b34..d46f515f 100644
--- a/src/common/linux/dump_symbols.cc
+++ b/src/common/linux/dump_symbols.cc
@@ -251,6 +251,9 @@ static int LoadLineInfo(struct nlist *list,
       // Don't set it here.
       // Will be processed in later pass.
       line.source_id = -1;
+      // Compiler worries about uninitialized fields in copy for 'push_back'.
+      line.size = 0;
+      line.rva_to_base = 0;
       func_info->line_info.push_back(line);
       ++cur_list;
     }