X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdlib%2Ffree.c;h=04217e68e86eb0821331450292853bda3885d9cc;hb=b1fc26afebd4d557ff89a44bc21767a8704c3809;hp=43de1299846b9f66162560e733996be060f8495e;hpb=b08f4b52b1cd1f7a9553c0f357a7c90859fa3e73;p=pdclib

diff --git a/functions/stdlib/free.c b/functions/stdlib/free.c
index 43de129..04217e6 100644
--- a/functions/stdlib/free.c
+++ b/functions/stdlib/free.c
@@ -1,5 +1,3 @@
-/* $Id$ */
-
 /* void free( void * )
 
    This file is part of the Public Domain C Library (PDCLib).
@@ -10,10 +8,7 @@
 
 #ifndef REGTEST
 
-#ifndef _PDCLIB_INT_H
-#define _PDCLIB_INT_H _PDCLIB_INT_H
 #include <_PDCLIB_int.h>
-#endif
 
 /* TODO: Primitive placeholder. Much room for improvement. */
 
@@ -22,6 +17,10 @@ extern struct _PDCLIB_headnode_t _PDCLIB_memlist;
 
 void free( void * ptr )
 {
+    if ( ptr == NULL )
+    {
+        return;
+    }
     ptr = (void *)( (char *)ptr - sizeof( struct _PDCLIB_memnode_t ) );
     ( (struct _PDCLIB_memnode_t *)ptr )->next = NULL;
     if ( _PDCLIB_memlist.last != NULL )
@@ -39,10 +38,12 @@ void free( void * ptr )
 
 #ifdef TEST
 #include <_PDCLIB_test.h>
+#include <stdbool.h>
 
 int main( void )
 {
-    /* tests covered in malloc test driver */
+    free( NULL );
+    TESTCASE( true );
     return TEST_RESULTS;
 }