2007-08-08 Michael Snyder <msnyder@access-company.com>

	* target.c (target_read_string): Guard against null.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 9e9724f..6b3636c 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,7 @@
 2007-08-08  Michael Snyder  <msnyder@access-company.com>
 
+       * target.c (target_read_string): Guard against null.
+
        * varobj.c (value_of_root): Move alloc after return to avoid leak.
 
        * tui/tui-layout.c (tui_set_layout): Dead code, dead variable.

diff --git a/gdb/target.c b/gdb/target.c
index 92a4d6a..38d6f68 100644 (file)
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -919,6 +919,8 @@ target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
   char *bufptr;
   unsigned int nbytes_read = 0;
 
+  gdb_assert (string);
+
   /* Small for testing.  */
   buffer_allocated = 4;
   buffer = xmalloc (buffer_allocated);
@@ -968,10 +970,9 @@ target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop)
       nbytes_read += tlen;
     }
 done:
+  *string = buffer;
   if (errnop != NULL)
     *errnop = errcode;
-  if (string != NULL)
-    *string = buffer;
   return nbytes_read;
 }