userspace: add WARNING comments because functions return static storage

1a6dc75e · Benoit Rat · c6bea0b2 · 1a6dc75e · 1a6dc75e
Commit 1a6dc75e authored Feb 11, 2013 by Benoit Rat
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util.c userspace/libswitchhw/util.c +4 -1

mac.c userspace/wrsw_rtud/mac.c +1 -0

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--- a/userspace/libswitchhw/util.c
+++ b/userspace/libswitchhw/util.c
@@ -47,7 +47,10 @@ uint64_t shw_get_tics()
 }


-
+/**
+ * \brief Helper function to quickly display byte into binary code.
+ * WARNING: this returns static storage
+ */
 const char *shw_2binary(uint8_t x)
 {
    static char b[9];

--- a/userspace/wrsw_rtud/mac.c
+++ b/userspace/wrsw_rtud/mac.c
@@ -32,6 +32,7 @@

 /**
 * \brief Helper function to convert mac address into a string
+ * WARNING: this returns static storage
 */
 char *mac_to_string(uint8_t mac[ETH_ALEN])
 {