commit cd8ab904e1c31df7dc45abd91dbe85dbe60e052f
author Urvang Joshi <urvang@google.com> Fri Oct 28 12:32:06 2016 -0700
committer Urvang Joshi <urvang@google.com> Fri Oct 28 14:40:29 2016 -0700
tree c953548a50cc3df5d527aa213fc6b2cd066179c7
parent 3ff8cb764b3d97ef91c246323801a23a3f8c6619

RANGE_CHECK: "==" || ">" is simply ">=".

Also:
- For unsigned ints, don't check value >= 0 as that is always true.
- Add "-Wlogical-op" warning flag which would have warned that "logical
  'or' of collectively exhaustive tests is always true" before this
  patch.

Change-Id: Idf3bd312464397f2df19256fc69b22f345dc7753

configure

diff --git a/configure b/configure
index fa458f7..721a7e1 100755
--- a/configure
+++ b/configure
@@ -620,6 +620,7 @@
         check_add_cflags -Wuninitialized
         check_add_cflags -Wunused
         check_add_cflags -Wsign-compare
+        check_add_cflags -Wlogical-op
         # Enabling the following warning (in combination with -Wunused above)
         # for C++ generates errors in third_party code including googletest and
         # libyuv. So enable it only for C code.