memchr, memchr2: add valgrind exception

* lib/memchr.valgrind: New file.
* lib/memchr2.valgrind: New file.
* modules/memchr (Files): Distribute valgrind file.
* modules/memchr2 (Files): Likewise.

Signed-off-by: Eric Blake <ebb9@byu.net>

1 files changed, 14 insertions, 0 deletions

diff --git a/lib/memchr2.valgrind b/lib/memchr2.valgrind
new file mode 100644
index 0000000000..778fe867dc
--- /dev/null
+++ b/lib/memchr2.valgrind
@@ -0,0 +1,14 @@
+# Suppress a valgrind message about use of uninitialized memory in memchr2().
+# Like memchr, it is safe to overestimate the length when the terminator
+# is guaranteed to be found.  In this case, we may end up reading a word
+# that is partially uninitialized, but this use is OK for a speedup.
+{
+    memchr2-value4
+    Memcheck:Value4
+    fun:memchr2
+}
+{
+    memchr2-value8
+    Memcheck:Value8
+    fun:memchr2
+}