Make the unused expression warning a bit less aggressive (found in PHP 
code).



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51276 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/unused-expr.c b/test/Sema/unused-expr.c
index 305c2be..b14daa7 100644
--- a/test/Sema/unused-expr.c
+++ b/test/Sema/unused-expr.c
@@ -35,3 +35,8 @@
   return ({int _a = x, _b = y; _a > _b ? _a : _b; });
 }
 
+void nowarn(unsigned char* a, unsigned char* b)
+{
+  unsigned char c = 1;
+  *a |= c, *b += c;
+}