Fix rdar://8139785 "implement warning on dead expression in comma operator"
As a bonus, fix the warning for || and && operators; it was emitted even if one of the operands had side effects, e.g:
x || test_logical_foo1();
emitted a bogus "expression result unused" for 'x'.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107274 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/expr-comma.c b/test/Sema/expr-comma.c
index d3e4020..b004fc1 100644
--- a/test/Sema/expr-comma.c
+++ b/test/Sema/expr-comma.c
@@ -11,7 +11,7 @@
// comma does not promote array/function in c90 unless they are lvalues.
-int W[sizeof(0, a.c) == sizeof(char*) ? 1 : -1];
-int X[sizeof(0, (foo().c)) == 17 ? 1 : -1];
-int Y[sizeof(0, (a,b).c) == 17 ? 1 : -1];
-int Z[sizeof(0, (a=b).c) == 17 ? 1 : -1];
+int W[sizeof(0, a.c) == sizeof(char*) ? 1 : -1]; // expected-warning {{expression result unused}}
+int X[sizeof(0, (foo().c)) == 17 ? 1 : -1]; // expected-warning {{expression result unused}}
+int Y[sizeof(0, (a,b).c) == 17 ? 1 : -1]; // expected-warning {{expression result unused}} // expected-warning {{expression result unused}}
+int Z[sizeof(0, (a=b).c) == 17 ? 1 : -1]; // expected-warning {{expression result unused}}