string clear check

2015-08-05 21:58:06 +01:00 · 2015-08-05 21:58:06 +01:00 · 8ba91c12fe
parent 4f23017594
commit 8ba91c12fe
1 changed files with 1 additions and 0 deletions
--- a/ostd/string.hh
+++ b/ostd/string.hh
@ -331,6 +331,7 @@ public:
    }

    void clear() {
+        if (!p_len) return;
        p_len = 0;
        *p_buf.first() = '\0';
    }