commit bdc2410da727500f62d0be3d30bf8eee02f677f4
author Craig Tiller <ctiller@google.com> Thu Apr 21 23:57:05 2016 -0700
committer Craig Tiller <ctiller@google.com> Thu Apr 21 23:57:05 2016 -0700
tree 0f9c7ae3c0c2c7689febe86719ffb25ae00be754
parent 4c79cb206d68959f7c1f8701c2076abd90f3f8ad

Expand corpus, fix crash

src/core/lib/surface/validate_metadata.c

diff --git a/src/core/lib/surface/validate_metadata.c b/src/core/lib/surface/validate_metadata.c
index bf41268..84f0a08 100644
--- a/src/core/lib/surface/validate_metadata.c
+++ b/src/core/lib/surface/validate_metadata.c
@@ -40,7 +40,7 @@
   const char *p = s;
   const char *e = s + len;
   for (; p != e; p++) {
-    int idx = *p;
+    int idx = (uint8_t)*p;
     int byte = idx / 8;
     int bit = idx % 8;
     if ((legal_bits[byte] & (1 << bit)) == 0) return 0;