add comment explaining last commit :)

git-svn-id: http://svn.cactuscode.org/flesh/trunk@3604 17b73243-c579-4c4c-a9d2-2d5706c11dac

1 files changed, 6 insertions, 0 deletions

diff --git a/src/util/Table.c b/src/util/Table.c
index 6fce9462..87050078 100644
--- a/src/util/Table.c
+++ b/src/util/Table.c
@@ -4993,6 +4993,12 @@ static
   #endif
     {
   void *const buffer = malloc(sizeof_value);
+  /*
+   * A 0-sized array is (or should be) legal for the table routines.
+   * Alas, on some systems malloc(0) returns a NULL pointer, so we must
+   * specially check for a 0-sized array in this next test to avoid
+   * falsely seeing this as "malloc failed -- we're out of memory".
+   */
   if (sizeof_value != 0 && buffer == NULL)
   {
     free(tep->key);