copy(), allow NULL argument

14 years ago · 608e0473d3
1 changed files with 3 additions and 0 deletions
--- a/src/misc/string.c
+++ b/src/misc/string.c
@ -28,6 +28,9 @@ copy(const char *str)
 {
    char *p;
    
+    if (!str)
+        return NULL;
+
    if ((p = TMALLOC(char, strlen(str) + 1)) != NULL)
 	    (void) strcpy(p, str);
    return(p);