ncurses 5.9 - patch 20110528

[ncurses.git] / ncurses / trace / trace_buf.c

diff --git a/ncurses/trace/trace_buf.c b/ncurses/trace/trace_buf.c
index 7bf91c674df3369a13c7fc575c191e65aeef2e6e..46baba4796b2e33108cf3d3ceaf41180cb6bf675 100644 (file)
--- a/ncurses/trace/trace_buf.c
+++ b/ncurses/trace/trace_buf.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2003,2007 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2010,2011 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -27,7 +27,7 @@
  ****************************************************************************/
 
 /****************************************************************************
- *  Author: Thomas E. Dickey <dickey@clark.net> 1997                        *
+ *  Author: Thomas E. Dickey                 1997-on                        *
  ****************************************************************************/
 /*
  *     trace_buf.c - Tracing/Debugging buffers (attributes)
@@ -35,7 +35,9 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: trace_buf.c,v 1.13 2007/04/21 22:50:08 tom Exp $")
+MODULE_ID("$Id: trace_buf.c,v 1.17 2011/01/22 19:48:16 tom Exp $")
+
+#ifdef TRACE
 
 #define MyList _nc_globals.tracebuf_ptr
 #define MySize _nc_globals.tracebuf_used
@@ -47,30 +49,36 @@ _nc_trace_alloc(int bufnum, size_t want)
 
     if (bufnum >= 0) {
        if ((size_t) (bufnum + 1) > MySize) {
-           size_t need = (bufnum + 1) * 2;
-           if ((MyList = typeRealloc(TRACEBUF, need, MyList)) == 0)
-               return (0);
-           while (need > MySize)
-               MyList[MySize++].text = 0;
+           size_t need = (size_t) (bufnum + 1) * 2;
+           if ((MyList = typeRealloc(TRACEBUF, need, MyList)) != 0) {
+               while (need > MySize)
+                   MyList[MySize++].text = 0;
+           }
        }
 
-       if (MyList[bufnum].text == 0
-           || want > MyList[bufnum].size) {
-           MyList[bufnum].text = typeRealloc(char, want, MyList[bufnum].text);
-           if (MyList[bufnum].text != 0)
-               MyList[bufnum].size = want;
+       if (MyList != 0) {
+           if (MyList[bufnum].text == 0
+               || want > MyList[bufnum].size) {
+               MyList[bufnum].text = typeRealloc(char, want, MyList[bufnum].text);
+               if (MyList[bufnum].text != 0)
+                   MyList[bufnum].size = want;
+           }
+           result = MyList[bufnum].text;
        }
-
-       result = MyList[bufnum].text;
     }
 #if NO_LEAKS
     else {
        if (MySize) {
-           while (MySize--) {
-               if (MyList[MySize].text != 0)
-                   free(MyList[MySize].text);
+           if (MyList) {
+               while (MySize--) {
+                   if (MyList[MySize].text != 0) {
+                       free(MyList[MySize].text);
+                   }
+               }
+               free(MyList);
+               MyList = 0;
            }
-           free(MyList);
+           MySize = 0;
        }
     }
 #endif
@@ -96,10 +104,16 @@ NCURSES_EXPORT(char *)
 _nc_trace_bufcat(int bufnum, const char *value)
 {
     char *buffer = _nc_trace_alloc(bufnum, 0);
-    size_t have = strlen(buffer);
+    if (buffer != 0) {
+       size_t have = strlen(buffer);
 
-    buffer = _nc_trace_alloc(bufnum, 1 + have + strlen(value));
-    (void) strcpy(buffer + have, value);
+       buffer = _nc_trace_alloc(bufnum, 1 + have + strlen(value));
+       if (buffer != 0)
+           (void) strcpy(buffer + have, value);
 
+    }
     return buffer;
 }
+#else
+EMPTY_MODULE(_nc_empty_trace_buf)
+#endif /* TRACE */