parsergen: don't leave garbage in the $0 buffer.

As this is static it gets reused.  We are likely to free pointers
in it, so after doing that we should make sure it gets zeroed.

Signed-off-by: NeilBrown <neil@brown.name>

diff --git a/csrc/parsergen.mdc b/csrc/parsergen.mdc
index 81121430f9b3e6e7c31c1c99aa656e1e3498c281..fbb561cfe7f2a796927474df4f08cad1225fda09 100644 (file)
--- a/csrc/parsergen.mdc
+++ b/csrc/parsergen.mdc
@@ -2642,6 +2642,7 @@ since the last state which could have been at the start of a line.
 
                                pop(&p, size, do_free);
                                shift(&p, memdup(buf, bufsize), states);
+                               memset(buf, 0, bufsize);
                                if (prod == 0)
                                        accepted = 1;
                                continue;