Mesa (mesa_7_6_branch): util: Ensure debug_dump_flags generates a null-terminated string.

[Vinson Lee]

Module: Mesa
Branch: mesa_7_6_branch
Commit: 51dcea2aac08ed68b713de0a741c782d51a5b916
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=51dcea2aac08ed68b713de0a741c782d51a5b916

Author: Vinson Lee <vlee at vmware.com>
Date:   Wed Dec 23 15:19:45 2009 -0800

util: Ensure debug_dump_flags generates a null-terminated string.

---

 src/gallium/auxiliary/util/u_debug.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/gallium/auxiliary/util/u_debug.c b/src/gallium/auxiliary/util/u_debug.c
index 96d400c..be5eb87 100644
--- a/src/gallium/auxiliary/util/u_debug.c
+++ b/src/gallium/auxiliary/util/u_debug.c
@@ -452,7 +452,8 @@ debug_dump_flags(const struct debug_named_value *names,
 	    util_strncat(output, "|", sizeof(output));
 	 else
 	    first = 0;
-	 util_strncat(output, names->name, sizeof(output));
+	 util_strncat(output, names->name, sizeof(output) - 1);
+	 output[sizeof(output) - 1] = '\0';
 	 value &= ~names->value;
       }
       ++names;
@@ -465,7 +466,8 @@ debug_dump_flags(const struct debug_named_value *names,
 	 first = 0;
       
       util_snprintf(rest, sizeof(rest), "0x%08lx", value);
-      util_strncat(output, rest, sizeof(output));
+      util_strncat(output, rest, sizeof(output) - 1);
+      output[sizeof(output) - 1] = '\0';
    }
    
    if(first)